E. V. Korobchenko, S. I. Nebaluev, “Leray–Serra spectral sequence for tolerant quasifibering of tolerant ways”, Izv. Saratov Univ. Math. Mech. Inform., 11:1 (2011), 24–30
S. I. Nebaluev, M. N. Susin, “Tolerant bundle of ways and Gurevich's theorem for tolerant spaces”, Izv. Saratov Univ. Math. Mech. Inform., 9:4(1) (2009), 41–44