To cite equateIRT in publications use:
Michela Battauz (2015). equateIRT: An R Package for IRT Test Equating. Journal of Statistical Software, 68(7), 1-22.<doi:10.18637/jss.v068.i07>
Corresponding BibTeX entry:
@Article{, title = {{equateIRT}: An {R} Package for IRT Test Equating}, author = {Michela Battauz}, journal = {Journal of Statistical Software}, year = {2015}, volume = {68}, number = {7}, pages = {1--22}, doi = {10.18637/jss.v068.i07}, }