1. All directed BIBDs with k = 3 exist
2. Every twofold triple system can be directed
3. Snappy constructions for triple systems;Stinson;Austral. Math. Soc. Gaz.,1983
4. Rotational directed triple systems;Cho;J. Korean Math. Soc.,1987
5. An optimal algorithm for directing triple systems using eulerian circuits;Harms;Ann. Discrete Math.,1985