Some criteria for the completeness of the system of root-vectors of a linear operator in space with two norms
I. A. Novosel'skii

This publication is cited in the following articles:

1. G. V. Radzievskii, “The problem of the completeness of root vectors in the spectral theory of operator-valued functions”, Russian Math. Surveys, 37:2 (1982), 91–164            
2. S. Ya. Yakubov, K. S. Mamedov, “Multiple completeness of a system of characteristic and adjoined elements of a polynomial operator bundle and multiple decompositions with respect to this system”, Funct. Anal. Appl., 9:1 (1975), 90–92