The following publications are possibly variants of this publication:
- The ASTRAL Compendium in 2004John-Marc Chandonia, Gary Hon, Nigel S. Walker, Loredana Lo Conte, Patrice Koehl, Michael Levitt, Steven E. Brenner. nar, 32(Database-Issue):189-192, 2004.
- The ASTRAL compendium for protein structure and sequence analysisSteven E. Brenner, Patrice Koehl, Michael Levitt. nar, 28(1):254-256, 2000.