1. Grafarend, E.W.: Unbiased free net adjustment. Surv. Rev. XXII(171), 200–219 (1974a)
2. Vanicek, P.; Krakiwsky E.J.; Geodesy the Concepts, 2nd edn. North-Holland Publishing company, Amsterdam (1986)
3. Kuang, S.L.: Optimization and Design of Deformation Monitoring Schemes. Ph.D. dissertation, Department of Surveying Engineering Technical Report No. 157, University of New Brunswick, Fredericton (1991)
4. Kiamehr, R.: Multi Object Optimization of Geodetic Network. NCC Geomatics 82 conferences, Tehran, Iran (2003)
5. Doma, M.I.: Application of Optimization Theory to Geodetic Networks Using Different Orders Design Problems. M. Sc. Thesis at the Faculty of Engineering, Minoufiya University, Minoufiya, Egypt (2004)