| 268 | pages          = {1891--1910}, | pages          = {1891--1910}, | 
| 269 | } | } | 
| 270 |  |  | 
| 271 |  | @Article{for-eta:15, | 
| 272 |  | author         = {Forget, G. and Campin, J.-M. and Heimbach, P. and Hill, C. N. and Ponte, R. M and Wunsch, C.}, | 
| 273 |  | title          = {{ECCO} version 4: an integrated framework for non-linear inverse modeling and global ocean state estimation}, | 
| 274 |  | journal        = {Geoscientific Model Development}, | 
| 275 |  | volume         = {8}, | 
| 276 |  | year           = {2015}, | 
| 277 |  | number         = {10}, | 
| 278 |  | pages          = {3071--3104}, | 
| 279 |  | url            = {http://www.geosci-model-dev.net/8/3071/2015/}, | 
| 280 |  | doi            = {10.5194/gmd-8-3071-2015} | 
| 281 |  | } | 
| 282 |  |  | 
| 283 | @Article{gas-eta:90, | @Article{gas-eta:90, | 
| 284 | author         = {P. Gaspar and Y. Gr\'egoris and J.-M. Lefevre}, | author         = {P. Gaspar and Y. Gr\'egoris and J.-M. Lefevre}, | 
| 285 | year           = 1990, | year           = 1990, |