1. Trend evaluation and comparison of the use and value of GL in core demography and computer science journals Rosa Di Cesare, Roberta Ruggieri, CNR-IRPPS Silvia Giannini, Stefania Biagioni, CNR-ISTI Sixth International Conference on Grey Literature New York, N.Y., USA 6-7 December 2004

2. GL6 - December, 6-7 20042 The idea …. To measure the impact of GL on different scientific fields To describe the characteristics of GL documents cited To ascertain any changes in GL due to the use of www (1995 and 2003)

3. GL6 - December, 6-7 20043 Sampled Journals: Demography (DEM) and Computer Science-Information Systems (CS-IS) Table 1

4. GL6 - December, 6-7 20044 Indicators Frequency of GL use Frequency of GL citing Intensity of GL use Frequency of e-GL use

5. GL6 - December, 6-7 20045 Frequency of GL use (1995 vs. 2003) Table 2

6. GL6 - December, 6-7 20046 Frequency of GL citing (1995 vs. 2003) Table 3

7. GL6 - December, 6-7 20047 Intensity of GL use (1995 vs.2003) Table 4

8. GL6 - December, 6-7 20048 e-GL use (1995) Table 5a

9. GL6 - December, 6-7 20049 e-GL use (2003) Table 5b

10. GL6 - December, 6-7 200410 Distribution of GL documents by document type (1995 vs. 2003) Table 6

11. GL6 - December, 6-7 200411 Distribution of GL documents by date (1995 vs. 2003) Table 7 DEM 1995: more than 50% of the citations were related to the last five years before 1995 2003: more than 50% of the citations were related to the last four years before 2003 CS-IS 1995: more than 50% of the citations were related to the last four years before 1995 2003: more than 50% of the citations were related to the last five years before 2003

12. GL6 - December, 6-7 200412 Distribution of Self-citations (1995 vs. 2003) Table 8

13. GL6 - December, 6-7 200413 Conclusion –GL use in DEM tends to decrease –GL use in CS-IS tends to increase DEM and CS-IS use GL differently: GL citation were often unclear and incomplete e-GL was used earlier by CS-IS, but its frequency in 2003 is higher in DEM