1. 4 the Symposium (International) on Combustion;Thring,1953
2. Curtet, R.: Publ. Scientifiques et Techniques du Ministère de l'Air No. 359, Paris.
3. 9th Symposium (International) on Combustion;Becker,1963
4. Measurements of entrainment by axisymmetrical turbulent jets