Pirkovskii A.YU.

Homology, Homotopy and Applications. Homology, Homotopy and Applications. Vol. 11. 2009. P. 81-114

Sbornik Mathematics. Russian Academy of Sciences. Vol. 199. 2008. P. 673-705

Mathematical Proceedings of the Cambridge Philosophical Society. Vol. 143. 2007. P. 375-385

Proceedings of the American Mathematical Society. Vol. 134. 2006. P. 2621-2631

Canadian Mathematical Bulletin. Canadian Mathematical Society. Vol. 47. 2004. P. 445-455