The objective was to provide access to European grey literature and to improve bibliographic coverage.
When CEC financial support ended in 1985, the national centres formed a network for the acquisition, identification and dissemination of grey literature called “European Association for Grey Literature Exploitation” or EAGLE, who became the producer of the SIGLE database.
Merging of the national files was done by an independent operating agent under contract and the database was hosted on up to three different servers.
One important difference to INIS was that SIGLE never included serials (only collections of monographs) and never provided records on an analytical level (book or report chapters, communications from conference proceedings etc.).
Each SIGLE record contained informative titles in English and/or in the original language, the author’s name, academic degree, and the research organization or educational institution, the document’s date of publication and type, number of pages, report numbers, and language, as well as subject classifications.
Lehrstuhl und Inst.fuer Siedlungswasserwirtschaft Funding Organization Oswald-Schulze-Stiftung, Gladbeck (DE) Source Jan 1998.
Document Type Numerical Data Country Germany, Federal Republic of Language German Abstract The main goals of co-fermentation are sewage sludge stabilisation, production of a cyclable product and minimisation of process emissions.
Criteria of evaluation were the quantity and quality of the resulting fermented sludge, biogas, and process water.
Document Type Report Country United Kingdom Language English Classification Code 10A Coal 10T Other power plants SIGLE was started in 1980, but since some members put in older documents, the earliest publications go back to the sixties.
These figures were related to different practices of research communities to publish white only or grey, but also to the willingness of organizations to cooperate.
In several countries monthly files were obtained by conversion from other catalogues, without a clear identification of the document type, so that the "miscellaneous" category is a "hold all" for these cases.
Instead members started to build institutional repositories or to provide access to electronic grey literature by other means.