Sobolevskij, P. E.; Pogorelenko, V. A. On periodic solutions of hyperbolic equations. (Russian) Zbl 0224.35052 Analit. Met. Teor. nelin. Koleb. 1, Trudy 5 mezdunarod. Konf. 1969, 530-534 (1970). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document MSC: 35L15 Initial value problems for second-order hyperbolic equations 35B10 Periodic solutions to PDEs Citations:Zbl 0223.34003 PDF BibTeX XML OpenURL