MACROMOLECULES, vol. 24, no. 20, page. 5729 - 5731, 1991-09-30
POLYMER BULLETIN, vol. 31, no. 5, page. 539 - 546, 1993-11
MACROMOLECULES, vol. 25, no. 26, page. 7300 - 7305, 1992-12-21