1. A men-driven computer system for managing a vegetation/habitat database and for the multivariate analysis of vegetation, soils, forestry and waterchemistry data;Almendinger;Summ. Wildlife Res. Proj. Find., 1987. St. Paul (Minn.),1988
2. Nog een botanisch Computerprogramm;Bakker;Gorteria,1988
3. Standard-Datenschlüssel Flora und Vegetation;Bemmerlein,1990
4. PST – ein Computerprogramm zur Anfertigung pflanzensoziologischer Tabellen im Dialogbetrieb;Callauch;Tuexenia,1984
5. A computer program for identifying species-releve groups in vegetation studies;Češka;Vegetado,1971