S. Muller, M. Hekman, und M. Lohse. Proc Natl Acad Sci U S A, 90 (22):
10439-43(November 1993)Muller, S Hekman, M Lohse, M J In Vitro Research Support, Non-U.S.
Gov't United states Proceedings of the National Academy of Sciences
of the United States of America Proc Natl Acad Sci U S A. 1993 Nov
15;90(22):10439-43..