Journal article
The cyclo-beta-tetrapeptide (beta-HPhe-beta-HThr-beta-HLys-beta-HTrp): Synthesis, NMR structure in methanol solution, and affinity for human somatostatin receptors
K Gademann, M Ernst, D Seebach, D Hoyer
Helvetica Chimica Acta | WILEY-V C H VERLAG GMBH | Published : 2000