@article {2009,
	title = {On the extremality, uniqueness and optimality of transference plans},
	journal = {Bull. Inst. Math. Acad. Sin. (N.S.) 4 (2009) 353-458},
	number = {SISSA;46/2009/M},
	year = {2009},
	abstract = {We consider the following standard problems appearing in optimal mass transportation theory: when a transference plan is extremal; when a transference plan is the unique transference plan concentrated on a set A,; when a transference plan is optimal.},
	url = {http://hdl.handle.net/1963/3692},
	author = {Stefano Bianchini and Laura Caravenna}
}
