1. For recent discussions of the flavour dependence of the QCD phase diagram and further references see: JLQCD Collaboration, S. Aoki et al., Nucl. Phys. B [Proc. Suppl.] 73 (1999) 456; A. Peikert, F. Karsch, E. Laermann, B. Sturm, Nucl. Phys. B [Proc. Suppl.] 73 (1999) 468.
2. For a recent review see: J. Rafelski, J. Letessier, Diagnosis of QGP with Strange Hadrons, hep-ph/9910300.
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