1. Optimization in the Ammonia Synthesis;Asbjornsen;KEMTEK II, First Scandinavian Symposium on Chemical Engineering, Copenhagen,1971
2. The Economical, Technical, Intellectual and Social Gap Between Theory and Practice in Process Control;Asbjornsen;AIChE Symp. Ser.,1976
3. Plant Reliability, Faults and Fault Detection;Asbjornsen;Kemia-Kemi,1978
4. Project Evaluation and Cash Flow Forecasting by Stochastic Simulation;Asbjornsen;Modeling, Identification and Control,1983