These are not necessarily the most important, but they're what we have at the moment.

 Not yet published is Hughes 2003 on stepped wedge designs, which is available here.  The other entries are links to PubMed abstracts for some articles (of which Moulton has electronic versions in his private library, FYI). For a limited time, Moulton 2004 Clinical Trials is available in its entirety.

• Chaudhary & Moulton -A SAS Macro for Constrained Randomization of Community Randomized Trials
• Moulton Covariate-based constrained randomization of group-randomized trials  Clinical Trials 2004
• Moulton Annecy talk on group-randomized trials 2002
• Moulton design group-randomized trial Spn vaccine CCT2001
• Hughes stepped-wedge design 2003
• Hall Hep B Gambia stepped-wedge design CANCRES1987
• Hayes design CRT review SMMR2000
• Hayes CRT sample size IJE1999
• Bennett CRT incidence rates covariates IJE2002
• Longini community trial random effects SIM2002
• Bellamy dichotomous outcome CRT SMMR
• Campbell CRT family practice SMMR
• Hedeker CRT correlated survival SMMR
• Klar challenges CRT SIM2001
• Loeys correlation compliance CRT SIM2001
• Murray components variance CRT SMMR2000
• Duffy CRT antecedent data negative trinomial SIM1992