Schrattenholzer, L. <https://pure.iiasa.ac.at/view/iiasa/2366.html>  (1985).  Experience with the Operation of an Energy Model Set.    In:  Bridge Between Control Science and Technology. Eds. Gertler, J. & Keviczky, L., pp. 3265-3268 Pergamon.  ISBN 978-0080316710