Internal migration and mobile communication patterns among pairs with strong tiesMikaela Irene D. Fudolig, Daniel Monsivais, Kunal Bhattacharya, Hang-Hyun Jo and Kimmo KaskiEPJ Data Sci., 10 1 (2021) 16DOI: https://doi.org/10.1140/epjds/s13688-021-00272-z