Lu, GY, T Adatte, G Keller, and N Ortiz. 1998. “Abrupt Climatic, Oceanographic and Ecologic Changes Near the Paleocene-Eocene Transition in the Deep Tethys Basin: The Alademilla Section, Southern Spain”. Eclogae Geologicae Helveticae 91: 293–306. Referenced from serials.unibo.it: Abrupt climatic, oceanographic and ecologic changes near the Paleocene-Eocene transition in the deep Tethys basin: The Alademilla section, southern Spain.