@article{ ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTExMS9qLjEzOTktMzAxMS4xOTk3LnRiMDExMjIueA, title = {Cyclotetrapeptides and cyclopentapeptides: occurrence and synthesis*}, journal = {The Journal of Peptide Research}, volume = {49}, number = {1}, pages = {67-73}, author = {SCHMIDT, ULRICH and LANGNER, JÖRG}, publisher = {Wiley}, year = {1997}, issn = {1397-002X}, language = {English}, url = {http://dx.doi.org/10.1111/j.1399-3011.1997.tb01122.x}, url = {https://katalog.ub.uni-leipzig.de/Record/ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTExMS9qLjEzOTktMzAxMS4xOTk3LnRiMDExMjIueA} }