Gualberto Buela-Casal Pandelis Perakakis Michael Taylor Purificación Checa Measuring internationality: Reflections and perspectives on academic journals. 45-65 2006 67 Scientometrics 1 http://dx.doi.org/10.1007/s11192-006-0050-z db/journals/scientometrics/scientometrics67.html#Buela-CasalPTC06