Footnote aj

^ajSee: Mintrop et al. 2000; Johnson et al. 1993; Kortzinger 2003.

Mintrop, L., F.F. Perez, M. Gonzalez-Davila, J.M. Santana-Casiano, and A. Körtzinger. 2000. Alkalintiy determination by potentiometric: intercalibration using three different methods. Scienc. Mar., 26(1):23-37.

Johnson, K., K.D. Willis, D.B. Butler, W.K. Johnson, and C.S. Wong. 1993. Coulometric carbon dioxide analysis for marine studies: Maximizing the performance of an automated gas extraction system and coulometric detector. Mar. Chem., 44(2-4):167-188.

Körtzinger, A. 2003. A significant CO₂ sink in the tropical Atlantic Ocean associated with the Amazon River plume. Geophys. Res. Lett., 30(24), 2287, doi:10.1029/2003GL018841.