Hansen JA and Smith LA  ‘ The role of operational constraints in selecting supplementary observati

Hansen, J.A. and Smith, L.A. (2000) ‘The role of operational constraints in selecting supplementary observations‘, Journal of the Atmospheric Sciences, 57 (17): 2859-2871. DOI: 10.1175/1520-04692000057<2859:TROOCI>2.0.CO;2. Abstract.