[1]
Sergienko, I.V., Lytvyn, O.N., Lytvyn, O.O., Tkachenko, A.V. and Gritcai, O.L. 2025. Interlineation of the functions of the three variables on a system of disjoint lines preserving the differentiability class . Reports of the National Academy of Sciences of Ukraine. 1 (Jan. 2025), 31–35. DOI:https://doi.org/10.15407/dopovidi2015.01.031.