@article{ASUO_2012_XX_2_a10,
     author = { Paul Loya and Sergiu Moroianu },
     title = { Singularities of the eta function of first-order
                            differential operators },
     journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}},
     publisher = {mathdoc},
     volume = {XX},
     number = {2},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/ASUO_2012_XX_2_a10/}
}