MakarovV.L., TymokhaO.M., KochubeiA.N., NikitinA.G., GerasymenkoV.I., DudkinM.Y., Ostrovs’kyiV.L., PlaksaS.A., RebenkoO.L. and RomanyukA.S. 2023. Volodymyr Dmytrovych Koshmanenko (on his 80 th birthday). Ukrains’kyi Matematychnyi Zhurnal. 75, 9 (Sep. 2023), 1294 - 1296. DOI:https://doi.org/10.3842/umzh.v75i9.7771.