When does an electron exit a tunneling barrier? D. Shafir, H. Soifer, B. D. Bruner, M. Dagan, Y. Mairesse, S. Patchkovskii, M. Yu. Ivanov, O. Smirnova and N. Dudovich EPJ Web of Conferences, 41 (2013) 02019 Published online: 13 March 2013 DOI: 10.1051/epjconf/20134102019