Internet resources:
- for preprints and scientific articles:
- preprint server arxiv.org: contains most articles written after ~1995 in astro-ph, hep-ph, hep-th, gr-qc,....
- astronomy and astrophysics preprints and articles on ADS
- high-energy physics literature database Inspire
- for catalogues and data: extragalactic, TeV, SNR
particle data group PDG - catalogues of extragalactic objects, tool etc: http://ned.ipac.caltech.edu/
- for catalogues and data: extragalactic, TeV, SNR