TY - JOUR AU - Harold Donnelly TI - Heat Equation and the Volume of Tubes. JO - Inventiones mathematicae PY - 1975 SP - 239 EP - 244 VL - 29 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1975__29_142340/ ID - IM_1975__29_142340 ER -