<https://aaai.org/papers/02459-2459-horn-belief-contraction-remainders-envelopes-and-complexity/>
<http://schema.org/name>
"Horn Belief Contraction: Remainders, Envelopes and Complexity - AAAI"
<https://aaai.org/papers/02459-2459-horn-belief-contraction-remainders-envelopes-and-complexity/>