**Ecem****Acar**, Department of Mathematics, Harran University, Şanlıurfa, Turkey**Francesca****Acotto**, Department of Mathematics “Giuseppe Peano", University of Turin, Italy**Ozge****Akcay**, Department of Computer Engineering, Munzur University, Tunceli, Turkey**Angela****Albanese**, Department of Mathematics and Physics "E. De Giorgi", University of Salento, Italy**Francesco****Altomare**, Department of Mathematics, University of Bari, Italy**Laura****Angeloni**, Department of Mathematics and Computer Science, University of Perugia, Italy**Gianluca****Audone**, Department of Mathematical Sciences "Giuseppe Luigi Lagrange", Polytechnic of Turin, Italy**Ismat****Beg**, Lahore School of Economics, Lahore, Punjab, Pakistan**Jean-Paul****Berrut**, Department of Mathematics, University of Fribourg, Switzerland**Leokadia****Bialas-Ciez**, Jagiellonian University, Faculty of Mathematics and Computer Science, Krakow, Poland**Lorenzo****Boccali**, Department of Mathematics, University of Florence, Italy (in consortium with University of Perugia and INdAM)**Vittoria****Bruni**, Department of Basic and Applied Sciences for Engineering (SBAI), University of Rome "La Sapienza", Rome, Italy**Gheorghe****Bucur**, Institute of mathematics, Romanian academy and University of Bucharest, Bucharest, Romania**Lleana****Bucur**, Technical University of Civil Engineering of Bucharest, Bucharest, Romania**Paola Erminia****Calabrese**, Department of Mathematics and Physics, University of Campania "Luigi Vanvitelli", Caserta, Italy**Rosanna****Campagna**, Department of Mathematics and Physics, University of Campania "Luigi Vanvitelli", Caserta, Italy**Michele****Campiti**, Department of Mathematics and Physics "E. De Giorgi", University of Salento, Italy**Marco****Cantarini**, Department of Mathematics and Computer Science, University of Perugia, Italy**Mirella****Cappelletti Montano**, Department of Mathematics, University of Bari, Italy**Roberto****Cavoretto**, Department of Mathematics "Giuseppe Peano", University of Turin, Italy**Clemente****Cesarano**, Section of Mathematics, International Telematic University Uninettuno, Italy**Rosario****Corso**, Department of Mathematics and Computer Science, University of Palermo, Palermo**Danilo****Costarelli**, Department of Mathematics and Computer Science, University of Perugia, Italy**Mariantonia****Cotronei**, DIIES, Mediterranean University of Reggio Calabria, Italy**Salvatore****Cuomo**, Department of Mathematics and Applications "Renato Caccioppoli", University of Naples "Federico II", Italy**Eleonora****De Angelis**, Department of Mathematics, University of Florence, Italy (in consortium with University of Perugia and INdAM)**Stefano****De Marchi**, Department of Mathematics "Tullio Levi-Civita", University of Padova, Italy**Francesco****Dell'Accio**, Department of Mathematics and Computer Science, University of Calabria, Italy**Filomena****Di Tommaso**, Department of Mathematics and Computer Science, University of Calabria, Italy**Kai****Diethelm**, Institute Digital Engineering, Technical University of Applied Sciences Würzburg-Schweinfurt, Germany**Borislav R.****Draganov**, Department of Mathematics and Informatics, Sofia University "St. Kliment Ohridski", Bulgaria**Giacomo****Elefante**, Department of Mathematics "Giuseppe Peano", University of Turin, Italy**Francesco****Esposito**, Department of Mathematics, Computer Science and Economics, University of Basilicata, Italy**Luisa Fermo**, Department of Mathematics and Computer Sciences, University of Cagliari, Italy**Elisa****Francomano**, Department of Engineering, University of Palermo, Italy**Ivan Ivanov****Gadjev**, Department of Mathematics and Informatics, Sofia University "St. Kliment Ohridski", Bulgaria**Valerii****Galkin**, Surgut State University, Russia**Maria Italia****Gualtieri**, Department of Mathematics and Computer Science, University of Calabria, Italy**Harun****Karsli**, Department of Mathematics, Faculty of Science and Arts, Bolu Abant Izzet Baysal University, Bolu, Turkey**Dimitri****Kenne**, Doctoral school of exact and natural sciences, Jagiellonian University, Kraków, Poland**Anna Lucia****Laguardia**, Department of Mathematics, Computer Science and Economics, University of Basilicata, Italy**Kaido****Latt**, University of Tartu, Faculty of Science and Technology, Institute of Mathematics and Statistics, Tartu, Estonia**Vita****Leonessa**, Department of Mathematics, Computer Science and Economics, University of Basilicata, Italy**Pierluigi****Maponi**, School of Science and Technology, University of Camerino, Italy**Francesco****Marchetti**, Department of Mathematics “Tullio Levi-Civita”, University of Padova, Italy**Giuseppe****Marino**, Department of Mathematics and Computer Science, University of Calabria, Italy**Nicola****Mastronardi**, Institute for calculus applications, IAC - UOS Bari, National Research Council, Italy**Thomas****Mejstrik**, University of Vienna, Austria**Claudio****Mele**, Department of Mathematics and Physics "E. De Giorgi", University of Salento, Italy**Domenico****Mezzanotte**, Department of Mathematics "Giuseppe Peano", University of Turin, Italy**Maryam****Mohammadi**, Department of Mathematics "Tullio Levi-Civita", University of Padova, Italy; Kharazmi University, Iran**Anna****Napoli**, Department of Mathematics and Computer Science, University of Calabria, Italy**Mariarosaria****Natale**, Department of Mathematics and Computer Science, University of Perugia, Italy**Geno****Nikolov**, Department of Mathematics and Informatics, Sofia University "St. Kliment Ohridski", Bulgaria**Donatella****Occorsio**Department of Mathematics, Computer Science and Economics, University of Basilicata, Italy**Gavriil****Paltineanu**Technical University of Civil Engineering of Bucharest, Romania**Michele****Piconi**, Department of Mathematics and Computer Science, University of Perugia, Italy**Ioan****Rasa**, Department of Mathematics, Technical University of Cluj-Napoca, Cluj-Napoca, Romania**Lucia****Romani**, University of Bologna, Department of Mathematics, Piazza Porta San Donato 5, 40126 Bologna, Italy**Milvia****Rossini**, Dipartimento di Matematica e Applicazioni, Università di Milano - Bicocca, Milano, Italy**Maria Grazia****Russo**, Department of Mathematics, Computer Science and Economics, University of Basilicata, Italy**Vincenzo****Schiano di Cola**, National Research Council (CNR), Institute on water research, Bari, Italy**Alvise****Sommariva**, Department of Mathematics "Tullio Levi-Civita", University of Padova, Italy**Woula****Themistoclakis**, IAC - CNR National Research Council of Italy, Naples, Italy**Arianna****Travaglini**, Department of Mathematics, University of Florence, Italy**Rumen****Uluchev**, Department of Numerical Methods and Algorithms, Sofia University "St. Kliment Ohridski", Bulgaria**Svilen S.****Valtchev**, CEMAT, IST, University of Lisbona, Portugal**Mikk****Vikerpuur**, Institute of Mathematics and Statistics, University of Tartu, Estonia**Gianluca****Vinti**, Department of Mathematics and Computer Science, University of Perugia, Italy**Domenico****Vitulano**, Department of Basic and Applied Sciences for Engineering (SBAI), University of Rome "La Sapienza", Rome, Italy**Xu****Yuan**, Department of Mathematics, University of Oregon, Eugene, USA**Luca****Zampogni**, Department of Mathematics and Computer Science, University of Perugia, Italy