Relative surjectivity coefficients of linear operators. (English. Russian original) Zbl 0994.47002
Russ. Math. 43, No. 6, 17-24 (1999); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1999, No. 6, 19-26 (1999).
Reviewer: Khristo N.Boyadzhiev (Ada)