TY  - JOUR
A1  - Henkel, Carsten
A1  - Chin, Y.
A1  - Langer, Norbert
A1  - Mauersberger, R.
T1  - Detection of extragalactic 15N : Nitrogen nucleosynthesis and chemical evolution
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Chin, Y.
A1  - Henkel, Carsten
A1  - Langer, Norbert
A1  - Mauersberger, R.
T1  - The detection of extragalactic 15N : consequences for nitrogeen nucleosynthesis and chemical evolution
Y1  - 1999
ER  -