@article{NSJOM_2002_32_1a_11,
     author = {J. 

 Kalinowski},
     title = {On rank 

 equivalence and rank preserving operators},
     journal = {Novi Sad Journal of Mathematics},
     pages = {133-139},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {2002},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2002_32_1a_11/}
}