@article{IVM_2019_7_a3,
     author = {B. A. Kats},
     title = {Zigzag-like and spiral-like arcs in boundary-value problems},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {39--47},
     year = {2019},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2019_7_a3/}
}