The complexity of regular subgraph recognition. - F. Cheah; Derek G. Corneil (Discret. Appl. Math., 1990)

Addendum. - F. Cheah; Derek G. Corneil (Discret. Appl. Math., 1991)

on the Structure of Trapezoid Graphs. - F. Cheah; Derek G. Corneil (Discret. Appl. Math., 1996)