Title: Optimizat︠s︡ii︠a︡ sistem otoplenii︠a︡, ventili︠a︡t︠s︡ii, kondit︠s︡ionirovanii︠a︡ vozdukha i teplogazosnabzhenii︠a︡
Subjects: Mathematical models, Ventilation, Air conditioning, Heating, Heating from central stations