Points of smoothness of a cone and convergence of positive functionals and operators
V. S. Klimov, M. A. Krasnosel'skiĭ, E. A. Lifšhits

This publication is cited in the following articles:

1. S. S. Kutateladze, A. M. Rubinov, “Minkowski duality and its applications”, Russian Math. Surveys, 27:3 (1972), 137–191        
2. I. D. Novikov, “Gibbs state in quantum statistical physics”, Funct. Anal. Appl., 4:4 (1970), 334–335