@PHDTHESIS{guzma2013, url = "http://www.theses.fr/2013PA066526", title = "Physical and chemical conditions in the horsehead photodissociation region", author = "Guzman Veloso, Viviana", year = "2013", pages = "1 vol. (XVIII-182 p.)", note = "Thèse de doctorat dirigée par Gerin, MaryvonneGoicoechea, Javier et Pety, Jérôme Astronomie et Astrophysique Paris 6 2013", note = "2013PA066526", }