@inproceedings{inproceedings6c72e2ce, title = {Investigation of the degenerate two-photon absorption cross-section in all-trans retinal: nonlinear spectrum and molecular structures}, author = {Vivas, M. G. and Silva, D. L. and Mendonça, Cleber Renato}, year = {2009}, publisher = {International Union of Materials Research Societies - IUMRS}, booktitle = {International Conference on Advanced Materials - ICAM} }