In the past decade applications of the statistical methods for survival data analysis have been extended beyond biomedical and reliability research to other fields. The term survival data has been used in a broad sense for data involving time to a certain event such a failure, response, death...

The aim of the article is to investigate if there exists a systematic link between size of the firm, market concentration and R&D activity of firms. Three tentative results emerged from the regression analysis based on the firm balanced panel data 1998-2006. First it follows from a regression...