1. G. Hetsroni, Heat transfer through an air curtain, PhD Thesis, Michigan State University, East Lansing, USA, 1963.
2. Heat transfer properties of an air curtain;Hetsroni;Transactions of the ASAE,1963
3. F.C. Hayes, Heat transfer characteristics of the air curtain: a plane jet subjected to transverse pressure and temperature gradients, PhD Thesis, University of Illinois, USA, 1968.
4. Heat transfer characteristics of the air curtain;Hayes;ASHRAE Transactions,1969
5. Design data for air curtains;Hayes;ASHRAE Transactions,1969