1. ASTM, STP 556, 1973, p. 125.
2. Japan Shipbuilding Research Association, Investigation report on safety standard of LNG tankers, Research Data No. 50R, 1976, p. 153.
3. Op. cit., No. 51R, 1976, p. 120.
4. Op. cit., No. 51R, 1976, p. 215.
5. Op. cit., No. 50R, 1976, p. 184.