المؤلفون: Neves, Liomar das, Duchala, Cynthia S., Godinho, Fatima, Haxhiu, Musa A., Colmenares, Clemencia, Macklin, Wendy B., Campbell, Christine E., Butz, Kenneth G., Gronostajski, Richard M.

المصدر: Proceedings of the National Academy of Sciences of the United States of America, 1999 Oct 01. 96(21), 11946-11951.

الوصول الحر: https://www.jstor.org/stable/48915Test

المؤلفون: Homanics, Gregg E., Smith, Terry J., Zhang, Sunny H., Lee, Denise, Young, Stephen G., Maeda, Nobuyo

المصدر: Proceedings of the National Academy of Sciences of the United States of America, 1993 Mar . 90(6), 2389-2393.

الوصول الحر: https://www.jstor.org/stable/2361532Test

المؤلفون: Clark, Frank H.

المصدر: Proceedings of the National Academy of Sciences of the United States of America, 1935 May . 21(5), 247-251.

الوصول الحر: https://www.jstor.org/stable/86668Test

المؤلفون: Clark, Frank H.

المصدر: Proceedings of the National Academy of Sciences of the United States of America, 1936 Aug . 22(8), 474-478.

الوصول الحر: https://www.jstor.org/stable/86294Test

المؤلفون: Clark, Frank H.

المصدر: Proceedings of the National Academy of Sciences of the United States of America, 1934 May . 20(5), 276-279.

الوصول الحر: https://www.jstor.org/stable/86845Test