Smith N et al 1991 A univariate statistical interpolation scheme for subsurface thermal analyses in the tropics. Prog in Oceanography 28, 2 19-256.
Leetmaa A and M Ji 1996 Ocean data assimilation as a component of a climate-forecast system In Modem Approaches to data assimilation in ocean modelling 271-293. Malanotti Rizzoli Editor. Elsevier
