CAI Activities in Switzerland. - Hans-Peter Frei (RGU, 1974)

A graphics-based programming-support system. - Hans-Peter Frei; Daniel L. Weller; Robin Williams (SIGGRAPH, 1978)

XS-0: a self-explanatory school computer. - Jürg Nievergelt; Hans-Peter Frei; Helmar Burkhart; C. Jacobi; Bernhard Plattner; Hirotsugo Sugaya; B. Weibel; J. Weydert (ACM SIGCSE Bull., 1978)

A Data Organization for Information Retrieval on a Personal Computer. - M. Bärtschi; Hans-Peter Frei (Personal Computing, 1981)

Adapting a Data Organization to the Structure of Stored Information. - M. Bärtschi; Hans-Peter Frei (SIGIR, 1982)

Retrieving Highly Dynamic, Widely Distributed Information. - M. F. Wyle; Hans-Peter Frei (SIGIR, 1989)

Designing a Hypermedia Information System. - Hans-Peter Frei; Peter Schäuble (DEXA, 1991)

The Retrieval View, a Component of the Document Architecture. - Hans-Peter Frei; D. Stieger (Hypertext/Hypermedia, 1991)

Evaluating Weighted Search Terms as Booleau Queries. - Hans-Peter Frei; S. Meienberg (Information Retrieval, 1991)

The Perils of Interpreting Recall and Precision Values. - Hans-Peter Frei; S. Meienberg; Peter Schäuble (Information Retrieval, 1991)

Retrieval Algorithm Effectiveness in a Wide Area Network Information Filter. - Hans-Peter Frei; M. F. Wyle (SIGIR, 1991)

Determining the effectiveness of retrieval algorithms. - Hans-Peter Frei; Peter Schäuble (Inf. Process. Manag., 1991)

Making Use of Hypertext Links when Retrieving Information. - Hans-Peter Frei; D. Stieger (ECHT, 1992)

Object recognition: the utopian method is dead; the time for combining simple methods has come. - Gladys Wong; Hans-Peter Frei (ICPR (3), 1992)

Effectiveness of Weighted Searching in an Operational IR Environment. - Hans-Peter Frei; Yonggang Qiu (Information Retrieval, 1993)

Concept Based Query Expansion. - Yonggang Qiu; Hans-Peter Frei (SIGIR, 1993)

Implementing a Multimedia IR Framework. - Tore A. Bratvold; Gabriele Sonnenberger; Hans-Peter Frei (MIRO, 1995)

Use and Reuse of Indexing and Retrieval Functionality in a Multimedia IR Framework. - Gabriele Sonnenberger; Tore A. Bratvold; Hans-Peter Frei (MIRO, 1995)

Design of a Reusable IR Framework. - Gabriele Sonnenberger; Hans-Peter Frei (SIGIR, 1995)

The Use of Semantic Links in Hypertext Information Retrieval. - Hans-Peter Frei; D. Stieger (Inf. Process. Manag., 1995)

Gerard (Gerry) Salton. - Maristella Agosti; Micheline Beaulieu; Cyril W. Cleverdon; Hans-Peter Frei; Norbert Fuhr; David J. Harper; Peter Ingwersen; E. Michael Keen; Rainer Kuhlen; Stephen E. Robertson; Alan F. Smeaton; Karen Sparck Jones; et al. (J. Documentation, 1996)