1. Utilization of Reserves in some Desert Geophytes;Boeken,1986
2. Biomass Partitioning and Water Availability in Desert Geophytes;Boeken;Oecologia (Berlin),1989
3. The effect of temperature in different habitats on flowering time of Stembergia clusiana in the Negev desert;Boeken,1986
4. Tulipa systola;Boeken,1989
5. Bellevalia desertorum and B. eigii;Boeken,1989