Probing the Galactic thick disc vertical properties and interfaces D. Katz, C. Soubiran, R. Cayrel, B. Barbuy, E. Friel, O. Bienaymé and M.-N. Perrin A&A, 525 (2011) A90 Published online: 03 December 2010 DOI: 10.1051/0004-6361/201014840