A simple phonon multiplexer L. Dobrzynski, A. Akjouj, B. Djafari-Rouhani, P. Zieliński and H. Al-Wahsh Europhys. Lett., 65 6 (2004) 791-794 Published online: 01 March 2004 DOI: 10.1209/epl/i2003-10199-6