Funding for this research was provided by:
Ministero dell’Istruzione, dell’Università e della Ricerca (2017JPCAPN 005)
Universita degli Studi di Bari Aldo Moro (Fondi di Ricerca di Ateneo 2017/18 “Problemi differenziali non lineari”)
Article History
Received: 7 November 2021
Accepted: 24 September 2022
First Online: 8 October 2022