1. An evaluation of the gravity control network in North America;Behrendt;Geophysics,1961
2. Gravitational studies in Oregon;Berg;Trans. Am. Geophys. Union,1965
3. Gravity anomalies and major tectonic features of Northwestern United States, Part 2, Boulder batholith area, Montana;Biehler;Geol. Soc. Am. Bull.,1958
4. Idaho Bur. Mines Geol. Pam.;Bonini,1963
5. Gravity anomalies in southern Idaho and southwestern Montana;Bonini;Geol. Soc. Am. Bull.,1957