@article{ASUO_2012_XX_1_a31,
     author = { ESSIN TURHAN and TALAT KORPINAR },
     title = { Tubular {Surfaces} {Around} {Timelike} {Biharmonic} {Curves
}                            in {Lorentzian} {Heisenberg} {Group} {Heis3} },
     journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}},
     publisher = {mathdoc},
     volume = {XX},
     number = {1},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/ASUO_2012_XX_1_a31/}
}