Imbs, Jean, and Romain Wacziarg (2003). Stages of diversification. American Economic Review, vol. 93, No. 1 (March), pp. 63-86.
Imbs, Jean, and Romain Wacziarg (2003). Stages of diversification. American Economic Review, vol. 93, No. 1 (March), pp. 63-86.