L. Santoso, D. Manongga, and A. Iriani, “Collaboration Analysis of Semarang City Dengue Hemorrhagic Fever Health Surveillance Officer with Social Network Analysis”, INTENSIF: J. Ilm. Penelit. dan Penerap. Tek. Sist. Inf., vol. 4, no. 1, pp. 1–21, Feb. 2020.