Traub, Wolfie и др. POLYMERS OF TRIPEPTIDES AS COLLAGEN MODELS 1. X-RAY STUDIES OF POLY (L-PROLYL-GLYCYL-L-PROLINE) AND RELATED POLYTRIPEPTIDES // Journal of Molecular Biology 16 (2). 1966. DOI:10.1016/S0022-2836(66)80182-1. с. 404.
Yonath, Ada и др. POLYMERS OF TRIPEPTIDES AS COLLAGEN MODELS 4. STRUCTURE ANALYSIS OF POLY(L-PROLYL-GLYCYL-L-PROLINE) // Journal of Molecular Biology 43 (3). 1969. DOI:10.1016/0022-2836(69)90352-0. с. 461.
Hope, H., Frolow, F., von Bohlen, K., Makowski, I., Kratky, C., Halfon, Y., Danz, H., Webster, P., Bartels, K. S., Wittmann, H. G. & Yonath, A. (1989). Acta Crystallogr. B45, 190 – 199. DOI:10.1107/S0108768188013710
