@article{IM2_2002_66_6_a1,
     author = {Ya. Sh. Il'yasov},
     title = {Non-local investigation of bifurcations of solutions of non-linear elliptic equations},
     journal = {Izvestiya. Mathematics },
     pages = {1103--1130},
     publisher = {mathdoc},
     volume = {66},
     number = {6},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2002_66_6_a1/}
}