Nguyen Van, P., François Laisney und Ulrich Kaiser (2004), The performance of German firms in the business-related service sectors : a dynamic analysis, Journal of Business and Economic Statistics 22 (3), 274-295.


Nguyen Van, P.
Laisney, François
Kaiser, Ulrich


Business surveys, generalized additive model, Markov chain, multinomial logit model, unobserved heterogeneity