Sukoco, A., H. Salimo, and Y. L. R. Dewi. “Multilevel Analysis on the Contextual Effect of Village and Sociodemographic Factors on Neonatal Death in Karanganyar, Central Java”. Journal of Maternal and Child Health, vol. 6, no. 2, Mar. 2021, pp. 206-18, http://thejmch.com/index.php/thejmch/article/view/576.