Hello everyone. In my PhD, I try to introduce the joint choice among departure time, destination and mode. I purpose some NL structures and I already estimated 2-Levels, 3-Levels and even 4-Level NL models gy using NLogit Software. I also estimated 2-Levels NL-OGEV model in which ordered nature of adjacent destinations are introduced. However, my main point of interest is the estimation of a GNL model with general nest and number of nests according to the potential correlation of departure time, destination and mode. So far, I could estimate it by Nlogit but with many assumptions and restrictions related to inclusive value parameters. I have purchased GAUSS 17 but I countered difficulties in learning its coding the model. Could any one help me to code such a model with GAUSS 17 or any other available software with complete rights of mention his/her participation in any papers of the thesis? I am ready to share required data and the estimated models and any other required information.