7571 V.D.Ivashchuk, A.A.Kobtsev / Exact exponential cosmological solutions with two factor spaces of dimension m in EGB model with a Lambda-term // Int. J. Geom. Methods Mod. Phys. (2019) vol.16, is.2, DOI:10.1142/S0219887819500257
7314 V.D.Ivashchuk, A.A.Kobtsev / Exponential cosmological solutions with two factor spaces in EGB model with Lambda=0 revisited // Eur. Phys. J. C (2019) vol.79, is.10, DOI:10.1140/epjc/s10052-019-7329-8