@article{NSJOM_1986_16_1a_6,
     author = {Janos L. and Martelli M.},
     title = {Sequentially ciondensing 

 maps},
     journal = {Novi Sad Journal of Mathematics},
     pages = {85-94},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {1986},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1986_16_1a_6/}
}