1. “Minimizing Wastes from Vacuum Pumping Systems,” Chemical Engineering, pp. 124–130 (October, 1996).
2. Liquid Ring Vacuum Pumps and Compressors, Translated from German by David Hollywood and Anette Vogt (1995).
3. , “Recent Development in Recycle Drying for Batch Processing Industry,” presented at ACHEMA, (June, 1988).
4. “Liquid-Ring Pumps for Handling Gases and Vapours,” Sulzer Technical Review, p. 63, No. 2 (1973).
5. “Combined Filter-Dryer Process Unit Improves Product Quality and Reduces Production Time,” Pharmaceutical Engineering, p. 42–45 (July/August, 1989).