A Direct Approach to Determine the External Disturbing Gravity Field by Applying Green Integral with the Ground Boundary Value
TIAN Jialei, WU Xiaoping, LI Shanshan
Acta Geodaetica et Cartographica Sinica . 2015, (11): 1189 -1195 .  DOI: 10.11947/j.AGCS.2015.20140516