Moin Ahmad and Mohammad Nazim have self-archived "Citing Patterns in Open Access Journals: A Study of D-Lib Magazine" in E-LIS.
Here's an excerpt:
The study was intended to investigate the pattern of citing references of research articles published in D-Lib Magazine during 2002-2008. A total of 4775 citations were collected from 295 articles published during the period. Articles classified as editorial materials, power point slides, book reviews, columns, reports and news items were excluded. References all articles were collected and Microsoft Office Excel 2007 was used for analyses. The aspects analysed focus on year-wise distribution of articles and cited references, types of documents cited, country and language of cited documents, file format and domain of cited references, etc.