Inverse Spectral Theory1st EditionVolume 130March 16, 1987Jurgen PoschelEnglisheBook 978-0-08-087449-49 7 8 - 0 - 0 8 - 0 8 7 4 4 9 - 4
Fuzzy Sets and Systems1st EditionOctober 28, 1980Didier J. DuboisEnglishHardback 978-0-12-222750-99 7 8 - 0 - 1 2 - 2 2 2 7 5 0 - 9eBook 978-0-08-091772-69 7 8 - 0 - 0 8 - 0 9 1 7 7 2 - 6