The quadratic digraph on polynomial rings over finite fields. - Yotsanan Meemark; Nathakhun Wiroonsri (Finite Fields Their Appl., 2010)

The digraph of the kth power mapping of the quotient ring of polynomials over finite fields. - Yotsanan Meemark; Nathakhun Wiroonsri (Finite Fields Their Appl., 2012)

Stein's method for negatively associated random variables with applications to second-order stationary random fields. - Nathakhun Wiroonsri (J. Appl. Probab., 2018)

Clustering performance analysis using new correlation based cluster validity indices. - Nathakhun Wiroonsri (CoRR, 2021)

A correlation-based fuzzy cluster validity index with secondary options detector. - Nathakhun Wiroonsri; Onthada Preedasawakul (CoRR, 2023)

Clustering performance analysis using a new correlation-based cluster validity index. - Nathakhun Wiroonsri (Pattern Recognit., 2024)

A Bayesian cluster validity index. - Onthada Preedasawakul; Nathakhun Wiroonsri (Comput. Stat. Data Anal., 2025)

Ranked differences Pearson correlation dissimilarity with an application to electricity users time series clustering. - Chutiphan Charoensuk; Nathakhun Wiroonsri (CoRR, 2025)

4TaStiC: Time and trend traveling time series clustering for classifying long-term type 2 diabetes patients. - Onthada Preedasawakul; Nathakhun Wiroonsri (CoRR, 2025)