Local Kendall's Tau. - P. Buthkhunthong; A. Junchuay; I. Ongeera; T. Santiwipanont; Songkiat Sumetkijakan (Econometrics of Risk, 2015)

Benfordness of Chains of Truncated Beta Distributions via a Piecewise Constant Approximation. - Tippawan Santiwipanont; Songkiat Sumetkijakan; Teerapot Wiriyakraikul (Structural Changes and their Econometric Modeling, 2019)

Countably piecewise monotonic surjection implicit dependence copulas. - Peerapong Panyasakulwong; Tippawan Santiwipanont; Songkiat Sumetkijakan; Noppawit Yanpaisan (Fuzzy Sets Syst., 2022)

Joining copulas of extreme implicit dependence copulas. - Noppawit Yanpaisan; Tippawan Santiwipanont; Songkiat Sumetkijakan (Int. J. Approx. Reason., 2025)