Kanzow, T, Send, U, Zenk, W, Chave, AD and Rhein, M (2006) Monitoring the integrated deep meridional flow in the Tropical North Atlantic: Long-term performance of a geostrophic array. Deep Sea Research Part I: Oceanographic Research Papers, 53(3). 528-546. doi:10.1016/j.dsr.2005.12.007