Guo Wen Bin, A. N. Skiba, “Two remarks on the identities of lattices of $\omega$-local and $\omega$-compositional formations of finite groups”, Russian Math. (Iz. VUZ), 46:5 (2002), 12–20
Guo Wenbin, Shum K.P., “Problems on product of formations”, Manuscripta Math., 108:2 (2002), 205–215
Guo Wenbin, Zhu Lujin, “On formations with Shemetkov condition”, Algebra Colloq., 9:1 (2002), 89–98
V. A. Vedernikov, M. M. Sorokina, “$\Omega$-foliated formations and Fitting classes of finite groups”, Discrete Math. Appl., 11:5 (2001), 507–527
A. G. Kusraev, “Cyclically compact operators in Banach spaces”, Vladikavk. matem. zhurn., 2:1 (2000), 10–23