Rusyda, H. A., A. Z. Soleh, L. Noviyanti, A. Chadidjah, and F. Indrayatna. “Utilization Copula in Determination of Shallot Insurance Premium Based on Regional Harvest Results”. EKSAKTA: Journal of Sciences and Data Analysis, vol. 20, no. 2, Oct. 2020, pp. 160-6, doi:10.20885/EKSAKTA.vol1.iss2.art11.