MPEJ Volume 11, No. 2, 38 pp. Received: Nov 25, 2004. Revised: Mar 8, 2005. Accepted: Mar 10, 2005. T. Jecko Non-trapping condition for semiclassical Schr\"odinger operators with matrix-valued potentials ABSTRACT: http://www.maia.ub.es/mpej/Vol/11/2.ps http://www.maia.ub.es/mpej/Vol/11/2.pdf http://www.ma.utexas.edu/mpej/Vol/11/2.ps http://www.ma.utexas.edu/mpej/Vol/11/2.pdf http://mpej.unige.ch/mpej/Vol/11/2.ps http://mpej.unige.ch/mpej/Vol/11/2.pdf