Ch. K. Gupta and E. I. Timoshenko, Partially Commutative Metabelian Groups: Centralizers and elementary Equa-tion, Algebra Logic, 48 (2009) 173–192.
 E. I. Timoshenko, Universal Equivalence of Partially Commutative Metabelian Groups, Algebra Logic, 49 (2010) 177–196.
 Ch. K. Gupta and E. I. Timoshenko, On Universal Theories of Partially Commutative Metabelian Groups, Algebra Logic, 50 (2011) 1–16.
 E. I. Timoshenko, A Mal’tsev Basis for a Partially Commutative Nilpotent Metabelian Group, Algebra Logic, 50 (2011) 647–658.
 Ch. K. Gupta and E. I. Timoshenko, Properties and Universal Theories of Partially Commutative Metabelian Nilpotent Groups, Algebra Logic, 51 (2012) 285–305.
 V. N. Remeslennikov and V. G. Sokolov, Some Properties of the Magnus Embedding, (Russian), Algebra Logic, 9 (1970) 342–349.
 E. I. Timoshenko, Endomorphisms and Universal Theories of Solvable Groups, Novosibirsk: NSTU publishers, 2013 pp. 327.
 O. Chapuis, Universal Theory of Certain Solvable Groups and Bounded Ore Group Rings, J. Algebra, 176 (1995) 368–391.
 Unsolved Probles in Group Theory, The Kourovka Notebook, issue 17, 2011.
 E. R. Green, Graph products of groups, PhD Thesis of Newcastleupon-Tyne, 2006.
 L. J. Corredor and M. A. Gutierrez, A generating set for the automorphism group of a graph product of abelian groups, Internat. J. Algebra Comput., 22 (2012) pp. 21, arXiv:0911.0576v1[math.GR], 2009.
 R. Charney, K. Ruane, N. Stambaugh and A. Vijayan, The automorphisms group of a graph product with no SIL, Illinois J. Math., 54 (2010) 249–262.
 E. I. Timoshenko, Metabelian Groups with one Defining Relation, and the Magnus Embedding, Math. Notes, 57 (1995) 414–420.
 A. Myasnikov and P. Shumyatsky, Discriminating groups and c-dimension, J. Group Theory, 7 (2004) 135–142.