@article{SHIMIZU_2009, doi = {10.1111/j.1399-3011.1983.tb02090.x}, url = {https://doi.org/10.1111%2Fj.1399-3011.1983.tb02090.x}, year = 2009, month = {jan}, publisher = {Wiley}, volume = {22}, number = {2}, pages = {231--238}, author = {TOSHIMI SHIMIZU and KATSUHIKO UENO and YOSHIO TANAKA and KEISHIRO TSUDA}, title = {Ring conformation of cyclic octapeptide cyclo (L -Pro-Sar)4 in the crystalline state}, journal = {International Journal of Peptide and Protein Research} }