Wu, Wenbo Inferring Earth's discontinuous chemical layering from the 660-kilometer boundary topography. [electronic resource] - Science (New York, N.Y.) 02 2019 - 736-740 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1095-9203 Standard No.: 10.1126/science.aav0822 doi