المؤلفون: Gergely, C., Schaaf, P., Senger, B., Maaloum, M., Horber, J. K. H., Hemmerle, J.

المصدر: Proceedings of the National Academy of Sciences of the United States of America, 2000 Sep . 97(20), 10802-10807.

URL الوصول: https://www.jstor.org/stable/123208