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"Gravity: Estimation Methods for Gravity Models in R."
Anna-Lena Wölwer et al. (2018)
- Anna-Lena Wölwer, Jan Pablo Burgard, Joshua Kunst, Mauricio Vargas:
Gravity: Estimation Methods for Gravity Models in R. J. Open Source Softw. 3(31): 1038 (2018)
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