1Meyer, M. et al. Free Patent, Information as a Resource for Policy Analysis.World Patent Information, 2003:(25).
2Fung M. K., Chow W. C. Measuring the Intensity of Knowledge Flow with Patent Statistics. Economics Letters,2002:(74).
3Ahrahrna,B, P. , Doitra, S. D. Innovation Assessment Through Patent Analysis.Technovation,2001:(21).
4Rozhkov, S. , Ivanteheva, L. Scientometrical Ndicators of National Science & Technology Policy Based on Patent Statistics Data. World Patent Information,1998:(20).
5Blackman, M. World Patent Information-the First 25 years. World Patent Information ,2004 : (26).
6Trippe, A, J. Patinformatics: Tazks to Tools. World Patent Information, 2003:(25).
