1. Albarrán, P., & Ruiz-Castillo, J. (2009). “References Made and Citations Received By Scientific Articles”, Working Paper 09-81, Economics Series 45, Universidad Carlos III, in press in Journal of the American Society for Information Science and Technology.
2. A Comparison of the Scientific Performance of the U.S. and Europe at the Turn of the 21st Century;Albarrán;Scientometrics,2010
3. Albarrán, P., Crespo, J., Ortuño, I., & Ruiz-Castillo, J. (2010b). The Skewness of Science in 219 Sub-fields and a Number of Aggregates, Working Paper 10-16, Universidad Carlos III.
4. Albarrán, P., Ortuño, I., & Ruiz-Castillo, J. (2010c). Average-based versus high- and low-impact indicators for the evaluation of citation distributions with, Working Paper 10-10. Universidad Carlos III.
5. The measurement of low- and high-impact in citation distributions: technical results;Albarrán;Journal of Informetrics,2011