@article{FAA_2019_53_4_a1,
     author = {E. S. Krasil'nikov},
     title = {Invariants of framed graphs and the {Kadomtsev--Petviashvili} hierarchy},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {14--26},
     publisher = {mathdoc},
     volume = {53},
     number = {4},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2019_53_4_a1/}
}