Contracting Optimally an Interval Matrix without Loosing Any Positive Semi-Definite Matrix Is a Tractable Problem.

Luc Jaulin Didier Henrion Contracting Optimally an Interval Matrix without Loosing Any Positive Semi-Definite Matrix Is a Tractable Problem. 1-17 2005 11 Reliable Computing 1 http://dx.doi.org/10.1007/s11155-005-5939-3 db/journals/rc/rc11.html#JaulinH05