//-->
Hierarchical location-allocation models for congested systems
Marianov, Vladimir, (1999)
Weber's problem with attraction and repulsion
Chen, Pey-chun, (1992)
A discrete optimisation model for locational decisions : the case study of single super phosphate plant in West Bengal
Das, Chandreyee, (1989)
A New Algorithm for a Special Quadratic Programming Model
Babu, V. S. S. Suresh, (1993)