@article{TRSPY_1971_112_a16,
     author = {L. D. Kudryavtsev},
     title = {Traces of functions of several variables, and direction fields that are regular at infinity for the {Laplace} operator},
     journal = {Informatics and Automation},
     pages = {256--270},
     publisher = {mathdoc},
     volume = {112},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1971_112_a16/}
}