The existence of E-Free Objects in E-Varieties of Regular Semigroups. - Y. T. Yeh (Int. J. Algebra Comput., 1992)

The Disjunctivities of w-languages. - Y. T. Yeh; S. S. Yu (Discret. Appl. Math., 2003)

A note of ins-primitive words. - H. K. Hsiao; Y. T. Yeh; S. S. Yu (Int. J. Comput. Math., 2004)

Languages and P0L schemes. - H. K. Hsiao; Y. T. Yeh; S. S. Yu (Int. J. Comput. Math., 2005)

Dependences related to strict binary relations. - H. K. Hsiao; Y. T. Yeh; S. S. Yu (Theor. Comput. Sci., 2005)