1. Intermittent heating;Billington;H.V.R.A. Lab. Report No. 26,1964
2. Intermittent heating;Shklover;Vodosnabjenie i sanitarnia technika,1962
3. Optimization in computer aided building design;Wilson,1973
4. Intermittent operation of heating systems;Stoeff;Genie Civil, No. 140,1963
5. Geometric Programming. Theory and Applications;Duffin,1967