The questionnaire was developed for the Eurotyp project.
''The project was carried out at Tilburg University. The project manager of the pilot study was M.A.C. Huybregts, executor H.M. Vos. The same questionnaires were used in 1993/1994 to get data from a wider range of languages within the ESF program, Theme Group 8 - Clitics and Other Non-lexical Categories, resulting in the following compilation of data made by Ludmila Veselovsk." (Vos & Veselovska, 1999: 1)