TY - CHAP A1 - Günther, David A1 - McGuire, Patrick C. A1 - Walter, Sebastian A1 - Weinkauf, Tino A1 - Hege, Hans-Christian T1 - Extraction of Valley Networks in Mars Elevation Maps T2 - Proc. European Planetary Science Congress Y1 - 2010 VL - 5 SP - EPSC2010 EP - 216 ER -