TY  - JOUR <br/>
             A1  - Visser, R.<br/>A1  - van Dishoeck, E. F.<br/>A1  - 
Black, J. H.<br/>T1  - The photodissociation of CO isotopologues<br/>JF  -  Astronomy & Astrophysics<br/>Y1  - 2009<br/>VL  - 503<br/>SP  - 323<br/>EP  - 343<br/>ER  -