Otto Sechser:
Link indicators and other means of cohesion indication in retrieval languages--syntactic and logico-semantic properties.
65-97 Electronic Edition (link) BibTeX
P. O'N. Hoey:
Comparison of cairs and status information storage and retrieval software over a 3 month period.
117-123 Electronic Edition (link) BibTeX
T. K. Todorov:
The computerized scientific and technical information processing and dissemination in Bulgaria.
295-297 Electronic Edition (link) BibTeX