F. Londoño K. J. Cleetus Y. V. Ramana Reddy A Blackboard Scheme for Cooperative Problem-Solving by Human Experts. 26-50 1989 conf/mitjsme/1989 MIT-JSME Workshop db/conf/mitjsme/mitjsme1989.html#LondonoCR89 http://dx.doi.org/10.1007/BFb0014272