1.		The european car hire industry / by Peter D. Smith Autor: Smith, Peter D. Data Publicação: 1991 Co col. autor sec.: EIU COTA(S): 4958
2.		Le marché du tourisme vert : clientèles européennes / Ministère du Tourisme Data Publicação: 1991 Col.autor: França. Ministère du Tourisme COTA(S): 5192
3.		Tourism customers in Central and Eastern Europa : perspectives of development / IPK - Institut für Planungskybernetik Data Publicação: 1991 Col.autor: IPK - Institut für Planungskybernetik COTA(S): 5734
4.		Papers on the over 50s in the 90s : factors for successful marketing of products and services / European Society for Opinion and Marketing Research Data Publicação: [1991?] Coautor: Hesse, Wolfgang Boggia, Raimondo Martin, Barbara Yesk, Albert J. Kerr, Douglas Llewellyn, Brendan Donaubauer, Jochen Brandhorst, Bernhard Filomarino, Beatrice Cito Camden, Debra McColl-Kennedy, Janet Drummond, Vicki Smith, Greg Kreitzman, Leon Ziegler, Margret Chicou, Hubert COTA(S): 5203
5.		The evolution in holiday travel facilities and in the flow of tourism inside and outside the European Community (ref. XXIII/Tourism/757/PC/hc) : final report [policopiado] / Tourconsult International, Tourconsult Italy; col. European Travel Data Center Data Publicação: 1991 Co col. autor: Tourconsult International Co col. autor sec.: Comunidade Europeia. Comissão COTA(S): 5738