@techreport{Himelein2020,
author = {Himelein, K. and Eckman, S. and Lau, C. and McKenzie, D.},
title= {Mobile phone surveys for understanding COVID-19 impacts: Part I sampling and mode},
year = {2020},
URL = {https://blogs.worldbank.org/impactevaluations/mobile-phone-surveys-understanding-covid-19-impacts-part-i-sampling-and-mode},
publisher = {World Bank},
institution = {Development Impact},
}