Using trade variety measures to identify technical change - Frensch, Richard 1959-; Gaucaite Wittich, Vitalija ([s. n.], 2015)
Begleitmaterial zu: Frensch, Richard ; Gaucaite Wittich, Vitalija: Product variety and technical change. IN: Journal of Development Economics. - Amsterdam. - 88 (2009),2, S. 242-257