A Note on Weakly Dedekind Finite Sets. - Pimpen Vejjajiva; Supakun Panasawatwong (Notre Dame J. Formal Log., 2014)

The finite subsets and the permutations with finitely many non-fixed points of a set. - Jukkrid Nuntasri; Supakun Panasawatwong; Pimpen Vejjajiva (Math. Log. Q., 2021)

The permutations with n non-fixed points and the subsets with n elements of a set. - Supakun Panasawatwong; Pimpen Vejjajiva (Math. Log. Q., 2023)