Erhard Erl

POTENTIAL OF THE BICYCLE AS A SUBSTITUTE FOR OTHER MODES OF TRANSPORTATION

Werner Brög, Erhard Erl, W. Brög, 1983 .

PROMOTION AND PLANNING FOR BICYCLE TRANSPORTATION: AN INTERNATIONAL OVERVIEW

Werner Brög, Gerd Sammer, Erhard Erl, 1984 .

PROBLEMS OF NONREPORTED TRIPS IN SURVEYS OF NONHOME ACTIVITY PATTERNS

Arnim H. Meyburg, Werner Brög, Erhard Erl, 1982 .

INTERACTIVE MEASUREMENT METHODS: THEORETICAL BASES AND PRACTICAL APPLICATIONS

Werner Brög, Erhard Erl, W. Brög, 1980 .

Survey Design: The Past, the Present and the Future

Werner Brög, Erhard Erl, Henk van Evert, 2006 .

Perceptions in Mode Choice Using Situational Approach “Trip-by-Trip Multivariate Analysis for Public Transportation”

Erhard Erl, Konstadinos Goulias, Werner Brog, 1998 .