Privacy Concerns and Purchase of Travel Product Online. - Mark R. Brown; Udo Gottlieb; Rose Muchira (ENTER, 2005)

Privacy Concerns and the Purchasing of Travel Services Online. - Mark R. Brown; Rose Muchira; Udo Gottlieb (J. Inf. Technol. Tour., 2007)

Virtual trade shows: Exhibitors' perspectives on virtual marketing capability requirements. - Udo Gottlieb; Constanza Bianchi (Electron. Commer. Res. Appl., 2017)