1.		Seminar on tourism statistics in the countries of central and eastern Europe, Prague, 28-30 Jan. 1992 / org. World Tourism Organization Data Publicação: 1992 Col.autor: Seminar on tourism statistics in the countries of central and eastern Europe. 1992 Co col. autor sec.: OMT
2.		Annuaire européen du temps libre et du tourisme / R. Delbaere, [et al.] Autor: Delbaere, R. Data Publicação: 1992 Coautor: Fleming, I. Marroquin, I. Gomez Van der Duim, R.
3.		Parcs nationaux et tourisme en Europe / Gérard Richez Autor: Richez, Gérard Data Publicação: 1992