Morawetz, Cathleen S.; Ludwig, D. An inequality for the reduced wave operator and the justification of geometrical optics. (English) Zbl 0157.18701 Commun. Pure Appl. Math. 21, 187-203 (1968). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 51 Documents Keywords:partial differential equations × Cite Format Result Cite Review PDF Full Text: DOI References: [1] Buslaev, Akad. Nauk SSSR Trudy Mat. Inst. Steklov 73 pp 14– (1964) [2] Grimshaw, Comm. Pure Appl. Math. 19 pp 167– (1966) [3] Hartman, Math. Z. 75 pp 228– (1961) [4] Keller, J. Opt. Soc. Amer. 52 pp 116– (1962) [5] Keller, Comm. Pure Appl. Math. 9 pp 207– (1956) [6] and , Electromagnetic Theory and Geometrical Optics, Interscience Publishers, New York, 1965. · Zbl 0123.23602 [7] Ludwig, Comm. Pure Appl. Math. 20 pp 103– (1967) [8] Morawetz, Comm. Pure Appl. Math. 15 pp 349– (1962) This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.