@article{DAN_1990_315_5_a4,
     author = {S. Martines and M. Sans and M. D. Martines},
     title = {Some inequalities for fractional integrals and derivatives},
     journal = {Doklady Akademii Nauk},
     pages = {1049--1051},
     publisher = {mathdoc},
     volume = {315},
     number = {5},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_315_5_a4/}
}