[Scientific collaboration and article citations: practices in medical journals].

Objective: In order to characterize scientific collaboration the best way is to study co-signature of articles. Two indicators are interesting: number of authors and international character. The objective is to study correlation between these two indicators and citation number.

[Comparative analysis of impact factor and h-index for pharmacology journals].

Using the strictly same parameters (identical two publication years (2004-2005) and identical one-year citation window (2006)), impact factor (IF) 2006 was compared with h-index 2006 for one sample of "pharmacology and pharmacy" journals computed from the ISI Web of Science. For this sample, the IF and the h-index rankings of the journals are very different. The correlation coefficient between the IF and the h-index is low for "pharmacology and pharmacy" journals.

[Correlation between document supply and citations in pharmacology].

Purpose: Investigation of the correlation between document supply by INIST-CNRS (Institut National de l'Information Scientifique et Technique) and citations of 89 pharmacology and pharmacy periodicals in 1992-2004. Investigation of the influence of electronic periodicals.

Methods: Analysis of the cards of document supply-citation correlation for the 89 periodicals during 13 years.

[Authors' affiliations and addresses in published articles. Lack of care penalizes French universities in international rankings].

Objective: To assess, through the example of the université Claude Bernard Lyon 1, whether the poor international visibility of French universities may be due in part to a lack of care by researchers in listing their affiliations and address on their scientific publications.

Method: Querying the heading "address" of Medline, Embase.com and Pascal Biomed for 2003 in searches for publications from Université Claude Bernard Lyon 1.