Yaprome T, Kruthoon O, Pipattanajinda N. A Characterization of Automorphism Group and Strong Endomorphism Monoid on Trees with Diameter less than 4. RJST [internet]. 2025 Aug. 29 [cited 2025 Dec. 11];7(2):150-64. available from: https://ph02.tci-thaijo.org/index.php/RJST/article/view/253688