1. Soil and waste pipe systems for housing;Building Research Station Digest,1972
2. Capacities of plumbing stacks in buildings;Wyly;National Bureau of Standards Building Materials and Structures Report,1952
3. Towards a general method for the design of drainage systems in large buildings;Lillywhite;Building Research Station current papers,1969
4. Limiting capacities of drainage stacks in single stack system;Balakrishna Rao;J. Environ. Hlth,1969