Patrik R. Callis

1La transitions of jet-cooled indoles and complexes from two-photon fluorescence excitation

Pedro L. Muino, Patrik R. Callis, 1994, Photonics West - Lasers and Applications in Science and Engineering.

Two-photon electronic spectra of nucleotides

Patrik R. Callis, Scott A. Williams, P. Callis, 1990, Photonics West - Lasers and Applications in Science and Engineering.