Least-square variance-covariance component estimation method based on the equivalent conditional adjustment model
LIU Zhiping, ZHU Dantong, YU Hang, ZHANG Kefei
Acta Geodaetica et Cartographica Sinica . 2019, (9): 1088 -1095 .  DOI: 10.11947/j.AGCS.2019.20180227