2) R.C. Hartlein, Technical Paper, The Society of the Plastics Industry, Inc., 25th Annual Technical Conference, Washington, D.C., February Second, (1970), p. 16-B.
3) E.P. Plueddemann, Technical Paper, The Society of the Plastics Industry, Inc., 27th Annual Technical Conference, Washington, D.C., February Second, (1972), p. 11-B. 高分子論文集, Vol. 38, No. 2 (1981)