Spanish scientific and technical journals. State of the art. - Concepción Ortega; Luis M. Plaza; María José Martín; Carmen Urdin (Scientometrics, 1992)

Scientific relations between Spain and central-Eastern European countries for the period 1982-1992. - Luis M. Plaza; María José Martín; J. Rey (Scientometrics, 1996)

The use of multiple databases in the assesment of research. An application in the field of plant science. - Luis M. Plaza (Scientometrics, 1998)

The transfer of knowledge from the Spanish public R&D system to the productive sectors in the field of Biotechnology. - Albert Armando; Luis M. Plaza (Scientometrics, 2004)

Scientific and technological performance evaluation of the Spanish Council for Scientific Research (CSIC) in the field of Biotechnology. - Albert Armando; Begoña Granadino; Luis M. Plaza (Scientometrics, 2007)

Scientific literature cited in USPTO patent documents as indicators for the evaluation and analysis of Spanish scientific research in biomedical disciplines. - Luis M. Plaza; Albert Armando (Scientometrics, 2008)

The representation of nationalities on the editorial boards of international journals and the promotion of the scientific output of the same countries. - Esther García-Carpintero; Begoña Granadino; Luis M. Plaza (Scientometrics, 2010)