• Developing gravity model for airline regional route modellingNõmmik, Allan; Kukemelk, SvenAviation2016 / p. 32-37 https://doi.org/10.3846/16487788.2016.1168007 https://www.scopus.com/sourceid/145434 https://www.scopus.com/record/display.uri?eid=2-s2.0-84963738917&origin=inward&txGid=f32b4b160ea9404456e123aa50abf5f4
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