@article{NSJOM_2009_39_1a_0,
     author = {M. Moji\'c},
     title = {Estimation of a condition number

 related to the weighted {Drazin} inverse},
     journal = {Novi Sad Journal of Mathematics},
     pages = {1-9},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {2009},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2009_39_1a_0/}
}