1. Abramowitz , M. Stegun , I. A. Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables 1970
2. Alix , P C. , Kobert Bigot , J-P. Loss of containment-experimental validation of two-phase critical flow models against water, R11, and methanol 9th International Symposium on Loss Prevention and Safety Promotion in the Process Industries 1998 976 986
3. American Petroleum Institute (API) Surface Roughness Effects on Heavier-Than-Air Gas Diffusion 1987