1. Anderson, J. M., and E. M. Mikhail. 1998. Surveying theory and practice. Boston: WCB/McGraw-Hill.
2. A new model for spherical instrument measurement uncertainty;Dorsey-Palmateer J. W.;J. CMSC,2018
3. FARO Technologies, Inc. 2016. FARO laser tracker vantage user manual April 2016. Lake Mary, FL: FARO Technologies, Inc.
4. Adjustment Computations
5. Ghilani, C. D. 2016. “A correctly weighted least squares adjustment part 3, estimating standard errors in angular observations.” xyHt, 44–45, April 25, 2016.