@article{NSJOM_2005_35_1a_15,
     author = {Z. Lozanov-Crvenkovi\'c and R. Mirkov},
     title = {Some 

 classes of positive definite {Colombeau} generalized functions},
     journal = {Novi Sad Journal of Mathematics},
     pages = {151-159},
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {2005},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2005_35_1a_15/}
}