拉格朗日量 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "拉格朗日量" in Chinese language version.

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archive.org

Torby, Bruce. Advanced Dynamics for Engineers. HRW Series in Mechanical Engineering. United States of America: CBS College Publishing. 1984. ISBN 0-03-063366-4 （英语）.

doi.org

Kushagra Nigam; Kinjal Banerjee. A Brief Review of Helmholtz Conditions. arxiv. 2016.

wikipedia.org

en.wikipedia.org

Goldstein, Herbert, Classical Mechanics 3rd, United States of America: Addison Wesley: pp. 61, 312–324, 1980, ISBN 0201657023 （英语）