@MANUAL {SARTAS:2018f, title = {Designing surveys in livelihood research Open Data Kit (ODK): Module 2: when to use ODK?}, author = {Sartas, M. }, year = {2018}, address = {International Institute of Tropical Agriculture}, note = {CAHub; Science Area; SSAB; 14p.; Learning material}, url = {https://www.researchgate.net/publication/322797094}, }