Ad Astra has a list* of researchers based in Romania and their ISI publications between 2002 and 2006 (computer science). The data is not so recent** and seems to be quite noisy***, still the general image is quite clear. It could be useful if you want to do research in Romania and you are looking for an adviser or a university****.
* Because of unavoidable errors this is not a reliable ranking.
** More recent data seems to be available in Excel format only. The format is more raw though.
*** The site allows you to correct the information for your papers if you find anything wrong.