1. Approximate solution on the non-stationary pitching of ships in regular waves, Univ. of Calif. Inst. Eng. Research, Series No. 6, Issue No. 9, March, 1956.
2. and , Some transformations of Michell's integral, Publ. Nat. Tech. Univ. Athens, No. 10, 1954.
3. and , A linear theory of ship motion in irregular waves, Univ. of Calif. Inst. Eng. Research, Series No. 61, Issue No. 2, July, 1953.