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On the Riesz means of spectral functions and eigenfunction expansions for elliptic differential operators
L. V. Hörmander
Citation:
L. V. Hörmander, “On the Riesz means of spectral functions and eigenfunction expansions for elliptic differential operators”, Matematika, 12:5 (1968), 91–130; Proc. Annual Sci. Conf., Belfer Grad. School Sci., 1966, 155–202
Linking options:
https://www.mathnet.ru/eng/mat481 https://www.mathnet.ru/eng/mat/v12/i5/p91
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