@article{NSJOM_1988_18_2a_1,
     author = {Ivkovi\'c Zoran A.},
     title = {A non-linear order of the {Markov} 

 process},
     journal = {Novi Sad Journal of Mathematics},
     pages = {25-30},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1988},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1988_18_2a_1/}
}