@article{DE_1968_4_2_a15,
     author = {F. V. Chumakov},
     title = {Integral equations with logarithmic kernel},
     journal = {Differencialʹnye uravneni\^a},
     pages = {336--346},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_2_a15/}
}