@article{DAN_1978_243_1_a3,
     author = {I. K. Lifanov},
     title = {The {Poincar\'e--Bertrand} formula and singular integral equations with multiple {Cauchy} type integrals},
     journal = {Doklady Akademii Nauk},
     pages = {22--25},
     publisher = {mathdoc},
     volume = {243},
     number = {1},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_243_1_a3/}
}