Field-induced non-linear optical features of p-aminoazobenzene crystalsV. Krishnakumar, G. Eazhilarasi, R. Nagalakshmi, M. Piasecki, I. V. Kityk and P. BragielEur. Phys. J. Appl. Phys., 42 3 (2008) 263-267DOI: https://doi.org/10.1051/epjap:2008056