An existence theorem via an intuitive idea and fixed-point theorems Cheng Ming Lee — 1978 Commentationes Mathematicae Universitatis Carolinae
On sequences of contractive-like mappings and fixed points Cheng Ming Lee — 1972 Commentationes Mathematicae Universitatis Carolinae
A note on metrically inward mappings Cheng Ming Lee; Kok Keong Tan — 1977 Commentationes Mathematicae Universitatis Carolinae