1. Mathematical tables;Anonymous,1937
2. Report 4, question 3, Comm. on Subterranean Water;Anonymous;Washington Assembly,1939
3. Requisite and qualifying conditions of artesian wells;Chamberlin,1885
4. De Glee, G. J., , Over grondwaterstroomingen bij wateronttrekking door middel van putten, Delft, 1930,
5. Two unusual types of artesian flow;Fuller,1905