BibTeX
@ARTICLE{
         Talagrand1987VAo,
       AUTHOR = "Talagrand, Olivier and Courtier, P.",
       TITLE = "Variational Assimilation of Meteorological Observations with the Adjoint Vorticity
         Equation -- {P}art {I}. {T}heory",
       JOURNAL = "Q. J. R. Meteorol. Soc.",
       VOLUME = "113",
       YEAR = "1987",
       PAGES = "1311--1328",
       REFERRED = "[Navon1991Aot]."
}