@article{MZM_1977_21_3_a12,
     author = {V. I. Nyaga},
     title = {Singular integral operators along a~complex contour},
     journal = {Matemati\v{c}eskie zametki},
     pages = {409--414},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1977_21_3_a12/}
}