1. O. M. Phillips,J. Ship Res. 43 (1962).
2. R. A. Doragh,Proc. Nav. Arch. Mar. Eng. Trans. 71, 370 (1963).
3. Y. Saji, M. Kitano, and A. Iwata,Adv. Cryog. Eng. 23, 159 (1978).
4. S. Way,J. Hydronaut. 2, 47 (1968).
5. A. Iwata, Y. Saji, and S. Sato,Proc. ICEC 8, 775 (1980).