Bishop, J. K. B., Collier, R. W., Kettens, D. R., & Edmond, J. M. (1980). The chemistry, biology, and vertical flux of particulate matter from the upper 1500 m of the Panama Basin. Deep Sea Research Part A. Oceanographic Research Papers, 27(8), 615–640. https://doi.org/10.1016/0198-0149(80)90077-1