ENERGY BALANCE CLOSURE AT FLUXNET SITES Article Valentini Riccardo, Wilson Kell, Goldstein Allen, Falge Eva, Aubinet Marc, Baldocchi Dennis, Berbigier Paul, Bernhofer Christian, Ceulemans Reinhart, Dolman Han, Field Chris, Grelle Achim, Ibrom Andreas, Law B.E, Kowalski Andy, Meyers Tilden, Moncrieff John, Monson Russ, Oechel Walter, Tenhunen John, Verma Shashi Agricultural and Forest Meteorology. Elsevier Science Publishing Company, Inc.. Vol. 113. 2002. P. 223-243