Rozov Alexe V., Sokolov Evgeny V. «On the residual nilpotence of free products of nilpotent groups with central amalgamated subgroups» // Tomsk State University Journal of Mathematics and Mechanics 2016. №6(44) C.34-44
Rozov Alexei Vyacheslavovich «On the residual n-finiteness of some free products of groups with central amalgamated subgroups» // Tomsk State University Journal of Mathematics and Mechanics 2016. №2(40) C.37-44
