@article{10_2298_FIL2215983G,
     author = {Hai-De Gou},
     title = {The method of lower and upper solutions for {Sobolev} type {Hilfer} fractional evolution equations},
     journal = {Filomat},
     pages = {4983 },
     year = {2022},
     volume = {36},
     number = {15},
     doi = {10.2298/FIL2215983G},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/FIL2215983G/}
}