Central Characters for Smooth Irreducible Modular Representations of GL 2 (Q p )
Rendiconti del Seminario Matematico della Università di Padova, Tome 128 (2012), pp. 1-6. 
@article{RSMUP_2012__128__1_0,
     author = {Berger, Laurent},
     title = {Central {Characters} for {Smooth} {Irreducible} {Modular} {Representations} of ${ GL}_2({Q}_p)$},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {1--6},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {128},
     year = {2012},
     mrnumber = {3076828},
     zbl = {1266.22018},
     language = {en},
     url = {http://archive.numdam.org/item/RSMUP_2012__128__1_0/}
}
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Berger, Laurent. Central Characters for Smooth Irreducible Modular Representations of ${ GL}_2({Q}_p)$. Rendiconti del Seminario Matematico della Università di Padova, Tome 128 (2012), pp. 1-6. http://archive.numdam.org/item/RSMUP_2012__128__1_0/

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