WKB Analysis to Global Solvability and Hypoellipticity

Todor Gramchev
Università degli Studi di Cagliari, Italy
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Masafumi Yoshino
Hiroshima University, Japan

Cite this article

Todor Gramchev, Masafumi Yoshino, WKB Analysis to Global Solvability and Hypoellipticity. Publ. Res. Inst. Math. Sci. 31 (1995), no. 3, pp. 443–464