Julius L. Speert
- An Improved Method for Adjusting Level and Traverse Surveys. Dans: Transactions of the American Society of Civil Engineers, v. 105, n. 1 ( 1940). (1940):
- Readjustment of Triangulation Datum. Dans: Transactions of the American Society of Civil Engineers, v. 103, n. 1 ( 1938). (1938):