| 1995 | 'Interieurhuis te Kortrijk (1868)', Analysis and research of the geometrical proportions |
| 'Synagoge de Delme (1878)', Analysis and research of the geometrical proportions |
| 1985 | 'Jan Blazej Santin-Aichel [Giovanni Santini] (1667-1723)', Research to the geometrical emblematic in the gothic Baroque architecture in Bohemia |
| 1983 | 'Old Egyptian Pyramid', Research on the proportional system |
| 'Research on the proportion 11:15', Analysis and research through different geometrical schemes |
| 'Francesco Borromini (1599-1667)', Analysis and research on the spatial proportions and systematic in the works |
| 1982 | 'Architecture of Henri Beyaert (1823-1894)', Research in the archives, facade analyses and research of the volumetric (icw Jos Vanderperren and Jozef Victoir) |
| 1980 | 'Architecture in Aalst 1920-1980', Inventarisation and analyses of buildings by the architects Antoon Blanckaert, Huib Hoste, a.o.. |