The Height Datum/geodetic Datum Problem: The Height Datum/geodetic Datum ProblemF. SansòGeophysical Journal International2002DOI 10.1046/j.1365-246x.2002.01680.x
"Datum Processing," "digital Datum Transmission," and "automaton Theory''R. K. RichardsInstitute of Electrical and Electronics Engineers1967DOI 10.1109/pgec.1967.264585
Datum Shifts of the Adindan-African 12thparallel survey-datumG. ObensonSpringer-Verlag1974DOI 10.1007/bf02521921