%0 Journal Article %T An active heat tracer experiment to determine groundwater velocities using fiber optic cables installed with direct push equipment %A Bakker, Mark %A Caljé, Ruben %A Schaars, Frans %A van der Made, Kees‐Jan %A de Haas, Sander %J Water Resources Research %V 51 %N 4 %P 2760-2772 %@ 0043-1397 %D 2015-04-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve