(Ingelesez)M. Fulchignoni; F. Ferri; F. Angrilli. (2002). «The Characterisation of Titan's Atmospheric Physical Properties by the Huygens Atmospheric Structure Instrument (Hasi)» Space Science Reviews (1): 395–431. doi:10.1023/A:1023688607077. Bibcode: 2002SSRv..104..395F..
(Ingelesez)M. Fulchignoni; F. Ferri; F. Angrilli. (2002). «The Characterisation of Titan's Atmospheric Physical Properties by the Huygens Atmospheric Structure Instrument (Hasi)» Space Science Reviews (1): 395–431. doi:10.1023/A:1023688607077. Bibcode: 2002SSRv..104..395F..