@article{KYB_2004_40_1_a4,
     author = {Tsiporkova, Elena and Boeva, Veselka},
     title = {Nonparametric recursive aggregation process},
     journal = {Kybernetika},
     pages = {51--70},
     year = {2004},
     volume = {40},
     number = {1},
     mrnumber = {2068598},
     zbl = {1249.62004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2004_40_1_a4/}
}