E. A. Timoshenko, A. V. Tsarev, “Sequences of Endomorphism Groups of Abelian Groups”, Math. Notes, 104:2 (2018), 309–315
E. A. Timoshenko, “Base fields of $\mathrm{csp}$-rings. II”, J. Math. Sci., 230:3 (2018), 451–456
E. A. Timoshenko, “Purely transcendental extensions of the field of rational numbers as base fields of csp-rings”, Vestn. Tomsk. Gos. Univ. Mat. Mekh., 2013, no. 5(25), 30–39
Egor A. Timoshenko, “Projective modules over csp-rings”, J. Sib. Fed. Univ. Math. Phys., 5:4 (2012), 581–585