CoCl2-GIC (graphite intercalation compound) is a heterogeneous magnet, which forms a three-dimensional (3D) network of 2D ferromagnetic clusters. The successive phase transitions at Tcu and Tcl (Tcu) have been described by a hierarchical spin ordering from intra- to inter-cluster order....

This paper considers the possibility of collective action by the business community to counter corruption in the award of government licenses and contracts. The analogy is with contract enforcement institutions studied by economic historians and contract law scholars. The institution in this...