1. Slichter , C. S. The Motions of Underground Waters USGS Water Supply Papers 67 1902
2. Slichter , C. S. Field Measurements of the Rate of Movement of Underground Waters USGS Water Supply Papers 140 1905
3. Use of Boron Compounds as Water Flood Tracers;Carpenter;Producers Monthly,1952
4. Tracing Fluids Between Wells;Heck;Producers Monthly,1954
5. Field Investigation of Waste Water Reclamation in Relation to Ground Water Pollution;Greenberg,1952