Ngabu, W., H. Pramoedyo, R. Fitriani, and A. B. Astuti. “Spatial Modeling of Fixed Effect and Random Effect With Fast Double Bootstrap Approach”. ComTech: Computer, Mathematics and Engineering Applications, vol. 14, no. 1, May 2023, pp. 1-9, doi:10.21512/comtech.v14i1.8033.