1. Antonov JI, Seidov D, Boyer TP, Locarnini RA, Mishonov AV, Garcia HE, Baranova OK, Zweng MM, Johnson DR (2010) World Ocean Atlas 2009, Volume 2: Salinity. In: Levitus S (ed) NOAA Atlas NESDIS 69. U.S. Government Printing Office, Washington, DC, 184 pp
2. Behringer, DW, Xue Y (2004). Evaluation of the global ocean data assimilation system at NCEP: The Pacific Ocean. In: Eighth symposium on integrated observing and assimilation systems for atmosphere, oceans, and land surface, AMS 84th Annual Meeting, Washington State Convention and Trade Center, Seattle, Washington, pp 11–15
3. de Szoeke RA, Springer SR (2009) The materiality and neutrality of neutral density and orthobaric density. J Phys Oceanogr 39:1779–1799
4. Forster TD, Carmack EC (1976) Frontal zone mixing and Antarctic bottom water formation in the southern Weddell Sea. Deep Sea Res 23:301–317
5. Helland-Hansen B (1912) The ocean waters, an introduction to physical oceanography. Intern Rev d Hydrobiol (Suppl) Bd. III, Ser 1, H. 2:1–84