To cite optmatch in publications use:
Hansen BB, Klopfer SO (2006). “Optimal full matching and related designs via network flows.” Journal of Computational and Graphical Statistics, 15(3), 609–627.
Corresponding BibTeX entry:
@Article{, author = {Ben B. Hansen and Stephanie Olsen Klopfer}, title = {Optimal full matching and related designs via network flows}, keywords = {matched sampling, minimum cost flow, nonrandom treatment assignment, observational study, quasiexperiment, subclassification}, journal = {Journal of Computational and Graphical Statistics}, volume = {15}, number = {3}, pages = {609--627}, year = {2006}, }