@article{IVM_1963_6_a7,
     author = {I. V. Zuev},
     title = {On circular integral curves of the equation $f(x,y,y')=0$},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {64--71},
     publisher = {mathdoc},
     number = {6},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1963_6_a7/}
}