If you use any of the GAUSS or R codes (in part or in the whole/ rewrite one or more codes in part or in the whole to some other language), please acknowledge so in your work and cite the paper listed above as well as the following paper:
Bhat, C.R., and R. Sidharthan (2011b), "A Simulation Evaluation of the Maximum Approximate Composite Marginal Likelihood (MACML) Estimator for Mixed Multinomial Probit Models", Transportation Research Part B, 45 (7), 940-953.