On powers of m-trapezoid graphs

Balakrishnan, 1983, Powers of chordal graphs, J. Austral. Math. Soc. Ser., A 35, 211, 10.1017/S1446788700025696

Dagan, 1988, Trapezoid graphs and their coloring, Discrete Appl. Math., 21, 35, 10.1016/0166-218X(88)90032-7

Dahlhaus, 1987, On strongly chordal graphs, Ars Combin., 24B, 23

Laskar, 1983, On powers and centers of chordal graphs, Discrete Appl. Math., 6, 139, 10.1016/0166-218X(83)90068-9

Raychaudhuri, 1987, On powers of interval graphs and unit interval graphs, 59, 235

A. Raychaudhuri, On powers of strongly chordal graphs and circular arc graphs, Manuscript.

Trotter, 1991