Calia, Pinuccia, and Maria Rosaria Ferrante. “A Multivariate Framework to Explore firms’ Internationalization Patterns: The Role of Individual Heterogeneity”. Statistica 68, no. 1 (January 1, 2008): 31–55. Accessed December 18, 2024. https://rivista-statistica.unibo.it/article/view/3520.