@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}, publisher = {mathdoc}, number = {7}, year = {2019}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_2019_7_a3/} }