Mastyło, M., and Y. Sawano. “Applications of Interpolation Methods and Morrey Spaces to Elliptic PDEs”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, vol. 21, no. special, 1-2, Dec. 2020, pp. 999-1021, doi:10.2422/2036-2145.201807_001.