Amit Konar Ajit K. Mandal Uncertainty Management in Expert Systems Using Fuzzy Petri Nets. 96-105 1996 8 IEEE Trans. Knowl. Data Eng. 1 db/journals/tkde/tkde8.html#KonarM96 db/journals/tkde/KonarM96.html TKDE8/k0096.pdf db/journals/tkde/KonarM96.html ... ... journals/tkde/ChenKC90 ... ... ... ... journals/ai/Pearl87a ... ... journals/ai/ShaferL87 ... journals/tkde/Zadeh89