Γκρίζα βιβλιογραφία (Greek Wikipedia)

Analysis of information sources in references of the Wikipedia article "Γκρίζα βιβλιογραφία" in Greek language version.

refsWebsite

Global rank Greek rank

low place

101^st place

low place

554^th place

4,082^nd place

15^th place

209^th place

163^rd place

low place

68^th place

24^th place

4,942^nd place

6,211^th place

code.google.com

An Analysis of Current Grey Literature Document Typology, Petra Pejšová, National Technical Library, Czech Republic Marcus Vaska, University of Calgary, Canada, Updated Jan 9, 2012

EU grey literature Long - term preservation, access, and discovery, European Centre for the Development of Vocational Training, Luxembourg: Publications Office of the European Union, 2012

Παραδείγματα:
Users of Documentation, National Council for Scientific and Technical Research, 1970,
GIS Newsletter, Issues 12-75, σελ. 9, Geoscience Information Society, 1970