TY - JOUR T1 - The basal speed of valley glaciers: an inverse approach JF - J. Glaciol. Y1 - 2004 A1 - Truffer, M. VL - 50 UR - http://openurl.ingenta.com/content/xref?genre=article{&}issn=0022-1430{&}volume=50{&}issue=169{&}spage=236 ER -