The dipeptide cyclic(glycyltryptophanyl) in the gas phase : aastal concerted action of density functional calculations, S-O-S-1 two-photon ionization, spectral UV/UV hole burning and laser photoelectron spectroscopyWiedemann, S.; Metsala, Andrus; Nolting, D.Physical chemistry chemical2004 / 10, p. 2641-2649 https://pubs.rsc.org/en/content/articlelanding/2004/cp/b316185d