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author={Leon-Tavares J,Chavushyan V,Patino-Alvarez V,Valtaoja E,Arshakian TG,Popovic Luka C,Tornikoski M,Lobanov A,Carraminana A,Carrasco L,Lahteenmaki A},
year={2013},
title={FLARE-like variability of the Mg II lambda 2800 emission line in the gamma-RAY BLAZAR 3C 454.3},
journal={ASTROPHYSICAL JOURNAL LETTERS},
volume={763},
number={2},
pages={-},
document_type={Article},
} 

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author={Fordham JLA,Vranesevic N,Carraminana A,Michel R,Much R,Wehinger P,Wyckoff S},
year={2002},
title={Phase-resolved spectroscopic imaging of the crab pulsar},
journal={ASTROPHYSICAL JOURNAL},
volume={581},
number={1},
pages={485-494},
document_type={Article},
}