The following publications are possibly variants of this publication:
- Perfect graphs with unique P::4::-structureStefan Hougardy. DM, 165-166:421-430, 1997. [doi]
- On ::::P::::::4::-transversals of perfect graphsChính T. Hoàng, Van Bang Le. DM, 216(1-3):195-210, 2000. [doi]
- On the ::::P::::::4::-structure of perfect graphs. II. Odd decompositionsChính T. Hoàng. JCT, 39(3):220-232, 1985. [doi]
- On the ::::P::::::4::-structure of perfect graphs I. Even decompositionsVasek Chvátal, Chính T. Hoàng. JCT, 39(3):209-219, 1985. [doi]