Intersection Graphs of <i>k</i>-Acyclic Families of Subtrees and Relational Database Query Processing.

Fanica Gavril Oded Shmueli Intersection Graphs of <i>k</i>-Acyclic Families of Subtrees and Relational Database Query Processing. 1-6 1998 66 Inf. Process. Lett. 1 db/journals/ipl/ipl66.html#GavrilS98 http://dx.doi.org/10.1016/S0020-0190(98)00028-3