A comparison of the scientific performance of the U.S. and the European union at the turn of the 21st century. - Pedro Albarrán; Juan A. Crespo; Ignacio Ortuño; Javier Ruiz-Castillo (Scientometrics, 2010)

The measurement of low- and high-impact in citation distributions: Technical results. - Pedro Albarrán; Ignacio Ortuño; Javier Ruiz-Castillo (J. Informetrics, 2011)

High- and low-impact citation measures: Empirical applications. - Pedro Albarrán; Ignacio Ortuño; Javier Ruiz-Castillo (J. Informetrics, 2011)

The skewness of science in 219 sub-fields and a number of aggregates. - Pedro Albarrán; Juan A. Crespo; Ignacio Ortuño; Javier Ruiz-Castillo (Scientometrics, 2011)

Corrigendum to "High- and low-impact citation measures: Empirical applications" [J. Informetrics 5 (2011) 122-145]. - Pedro Albarrán; Ignacio Ortuño; Javier Ruiz-Castillo (J. Informetrics, 2012)

Corrigendum to "The measurement of low- and high-impact in citation distributions: Technical results" [J. Informetrics 5 (2011) 48-63]. - Pedro Albarrán; Ignacio Ortuño; Javier Ruiz-Castillo (J. Informetrics, 2012)