1. Benahmed Daho, S.A., 2000. The new gravimetric geoid in Algeria. Bulletin No. 10 of the International Geoid Service—ISSN:1128-3955, pp. 85–90.
2. Benahmed Daho, S.A., Fairhead, J.D., 2004. A new quasi-geoid computation from gravity and GPS data in Algeria. Newton's Bulletin No. 2, A joint Bulletin of the Bureau Gravimétrique International and of the International Geoid Service—ISSN:1810-8547, pp. 52–59.
3. Bernese GPS Software Version 4.2 Manual;Beutler,2001
4. Fast collocation;Bottoni;Bulletin Géodésique,1993
5. Gravity field terrain effect computations by FFT;Forsberg;Bulletin Géodésique,1985