1. Photographic studies of natural convection between concentric cylinders;Bishop,1966
2. Natural convection in horizontal cylindrical annuli;Grigull,1966
3. Experimental investigation of natural convection heat transfer in simple and obstructed horizontal annuli;Lis,1966
4. Discussion of the paper “Natural convection in horizontal Iylindrical annuli”;Bishop,1967
5. Authors rebuttal;Grigull,1967