TY - CHAP AU - Duistermaat, J. J. TI - The light in the neighborhood of a caustic BT - Séminaire Bourbaki : vol. 1976/77, exposés 489-506 AU - Collectif T3 - Séminaire Bourbaki N1 - talk:490 PY - 1978 DA - 1978/// IS - 19 PB - Springer-Verlag UR - http://www.numdam.org/item/SB_1976-1977__19__19_0/ UR - https://zbmath.org/?q=an%3A0401.35063 UR - https://www.ams.org/mathscinet-getitem?mr=521757 LA - en ID - SB_1976-1977__19__19_0 ER -