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no DOI — not checkedMandelstam, L. I.; Papalexi, N. D.: On parametric excitation of electrical oscillations (in Russian). JTF 4, no. 5 (1934)
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no DOI — not checkedThorpe, Th. W.: A review of wave energy, vol. 1: Main report, ETSU-R-72: Renewable Energy Enquiries Bureau. Harwell (OX 11 ORA, U.K.): ETSU 1992
no DOI — not checkedKondo, H. (ed.): Proc. Int. Symp. on Ocean Energy Development (ODEC), Muroran, Hokkaido, Japan, August 26–27, 1993. Muroran: Muroran Inst. of Techn. & Cold Region Port and Harbour Engng. Research Center 1993
no DOI — not checkedDe O. Falcao, A. F. (ed.): Proc. of the 1993 European Wave Energy Symp., Edinburgh, July 21–24, 1993. NEL, East Kilbride, Glasgow (G75 OQU): The Conference Centre
no DOI — not checkedGraw, K.-U.: Shore protection and electricity by submerged plate wave energy converter. In [5]De O. Falcao, A. F. (ed.): Proc. of the 1993 European Wave Energy Symp., Edinburgh, July 21–24, 1993. NEL, East Kilbride, Glasgow (G75 OQU): The Conference Centre, pp. 379–384
no DOI — not checkedGraw, K.-U.: The submerged plate wave energy converter (a new type of wave energy device). In [4] pp. 307–310
no DOI — not checkedStoker, J. J.: Water waves. New York: Interscience Publ. 1957
no DOI — not checkedFeynman, R. P.;Leighton, R. B.;Sands, M.: The Feynman lectures on physics, vol. 2: Mainly electromagnetism and matter, Reading, Massachusetts: Addison Wesley 1969
no DOI — not checkedKamke, E.: Lösungsmethoden und Lösungen, Bd. 1: Gewöhnliche Differentialgleichungen. Leipzig: Akad. Verl.-Ges. Geest & Portig 1951
no DOI — not checkedCzichos, H. (ed.): Hutte. Die Grundlagen der Ingenieurwissenschaften (29. Auflage). Berlin: Springer 1989
no DOI — not checkedZosimov, A. V.; Nazurova, I. A.; Zosimova, I. A.; Zosimov, S. A.: Method for the conversion of the energy of surging billows into electric energy. USSR pat. no. SU 1 368 476 AI (granted on Jan. 23, 1988), Bull. no. 3 (in Russian)
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