Lagrange Multiplier Test for Spatial Autoregressive Model with Latent Variables. - Anik Anekawati; Bambang Widjanarko Otok; Purhadi Purhadi; Sutikno Sutikno (Symmetry, 2020)

A Logit Model for Bivariate Binary Responses. - Purhadi Purhadi; Muhamad Fathurahman (Symmetry, 2021)

Estimation and Hypothesis Testing for the Parameters of Multivariate Zero Inflated Generalized Poisson Regression Model. - Dewi Novita Sari; Purhadi Purhadi; Santi Puteri Rahayu; Irhamah Irhamah (Symmetry, 2021)

A Comparison of Bivariate Zero-Inflated Poisson Inverse Gaussian Regression Models with and without Exposure Variables. - Ermawati Ermawati; Purhadi Purhadi; Santi Puteri Rahayu (Symmetry, 2022)

Hypothesis Testing of Spatial and Temporal Weighted Ordinal Logistic Regression. - Margaretha Ohyver; Purhadi Purhadi; Achmad Choiruddin (ICoMS, 2024)