1. Broken coal-3. Generalized law of size distribution;Brown;J. Inst. Fuel,1941
2. The mathematical description of certain breakage mechanics leading to logarithmico-normal distribution;Epstein;J. Franklin Inst.,1947
3. Contribution to the theory of milling processes;Sedlatschek;Powder Metall. Bull.,1953
4. Coal breakage processes-1. A new analysis of coal breakage processes;Broadbent;J. Inst. Fuel,1956
5. Coal breakage processes-2. A matrix representation of breakage;Broadbent;J. Inst. Fuel,1956