Norbert Haydam

Reducing bias in shopping mall-intercept surveys: The time-based systematic sampling method

Binshan Lin, Johan de W. Bruwer, Norbert Haydam, 1996 .

The bed and breakfast market of Buffalo City (BC), South Africa: present status, constraints and success factors

Norbert Haydam, D. Tassiopoulos, N. Haydam, 2004 .