The following publications are possibly variants of this publication:
- Specialized Block-Colourings of Steiner Triple Systems and the Upper Chromatic IndexCharles J. Colbourn, Alexander Rosa. gc, 19(3):335-345, 2003. [doi]
- Equitable specialized block-colourings for 4-cycle systems - ILucia Gionfriddo, Mario Gionfriddo, Giorgio Ragusa. DM, 310(22):3126-3131, 2010. [doi]
- Equitable specialized block-colourings for 4-cycle systems - IIMario Gionfriddo, Giorgio Ragusa. DM, 310(13-14):1986-1994, 2010. [doi]
- Strict colourings for classes of steiner triple systemsLorenzo Milazzo, Zsolt Tuza. DM, 182(1-3):233-243, 1998. [doi]
- Colouring 4-cycle systems with equitably coloured blocksMario Gionfriddo, Gaetano Quattrocchi. DM, 284(1-3):137-148, 2004. [doi]