Wang Hong-lan (September 1987), "Analysis of the motion of a gyro-theodolite", Applied Mathematics and Mechanics, 8 (9): 889–900, doi:10.1007/BF02019527, S2CID121190508
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Wang Hong-lan (September 1987), "Analysis of the motion of a gyro-theodolite", Applied Mathematics and Mechanics, 8 (9): 889–900, doi:10.1007/BF02019527, S2CID121190508