029.9 Res R Research and development in information retrie- val : proceedings, Berlin, may 18-20, 1982/ ed. by Gerard Salton and Hans-Jochen Schnei der, — Berlin : Springer-Verlag, 1983. 311 p. : ilus. ; 25 cm. —(Lecture notes in computer science; 146) «Bibliografia": p. 310-311 ISBN 0-387-11978-7