1. “Dissertation research in public administration and cognate fields: An assessment of methods and quality”;ADAMS;Public Administration Review,1994
2. “Análisis de la productividad científica de la psicología española a través de las tesis doctorales”;AGUDELO;Psicothema,2003
3. “Acceso electrónico a las tesis doctorales de Cataluña”;ANGLADA;El profesional de la información,2002
4. “Commentary: Tourism geography as the subject of doctoral dissertations in China, 1989-2000”;BAO;Tourism Geographies,2002
5. BEILE, P.M., BOOTE, D.N. Y KILLINGSWORTH, E.K. (2003): Characteristics of Education Doctoral Dissertation References: An Institutional Analysis of Review of Literature Citations, 2003. pp. 04-00.