Persons RUS  ENG    JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB     Lehmann, N Joachim https://www.mathnet.ru/eng/person68053 List of publications on Google Scholar https://mathscinet.ams.org/mathscinet/MRAuthorID/112010 Publications in Math-Net.Ru Citations 1971 1. N. Joachim Lehmann, “Hilfsmittel zur optimalen Eigenwerteinschliessung. Ein Pendant zum Rayleigh–Ritz–Verfahren”, Zh. Vychisl. Mat. Mat. Fiz., 11:6 (1971),  1374–1389      ; U.S.S.R. Comput. Math. Math. Phys., 11:6 (1971), 17–37