1. Adams, O. S. 1930: “The Bowie Method of Triangulation Adjustment”. Special Publication No. 159, U.S. Coast and Geodetic Survey.
2. Bomford, A. G, 1966b: “Varycord: a Program for the Least Squares Adjustment of Surveys on the CDC 3600 Computer”. Technical Report No.6, Division of National Mapping, Canberra. In preparation.
3. Bomford, G. 1962: “Geodesy”, 2nd Edition, Oxford University Press.