@manual{73864, author = {D.M. Burridge and J. Steppeler and R. Strüfing}, title = {Finite element schemes for the vertical discretization of the ECMWF forecast model using linear elements}, year = {1986}, number = {54}, pages = {48}, month = {01/1986}, publisher = {ECMWF}, address = {Shinfield Park, Reading}, language = {eng}, }