On derivations of lattice implication algebras. - Sang Deok Lee; Kyung Ho Kim (Ars Comb., 2013)

An optimal family of eighth-order simple-root finders with weight functions dependent on function-to-function ratios and their dynamics underlying extraneous fixed points. - Sang Deok Lee; Young Ik Kim; Beny Neta (J. Comput. Appl. Math., 2017)