%Aigaion2 BibTeX export from Bibliography Database of the Working Group on Computational Intelligence %Friday 04 April 2025 04:36:32 AM @INBOOK{Kruse1989, author = {Kruse, Rudolf and Meyer, K. D.}, editor = {Janko, W. H. and Roubens, M. and Zimmermann, Hans-J{\"{u}}rgen}, title = {On Calculating the Covariance in the Presence of Vague Data}, series = {Progress in Fuzzy Sets and Systems}, year = {1989}, publisher = {Kluwer}, address = {Amsterdam, Netherlands} }