@Article{npg-14-777-2007,
AUTHOR = {Terwisscha van Scheltinga, A. D. and Dijkstra, H. A.},
TITLE = {Efficient estimation of time-mean states of ocean models using 4D-Var and implicit time-stepping},
JOURNAL = {Nonlinear Processes  in Geophysics},
VOLUME = {14},
YEAR = {2007},
NUMBER = {6},
PAGES = {777--788},
URL = {http://www.nonlin-processes-geophys.net/14/777/2007/},
DOI = {10.5194/npg-14-777-2007}
}