@article{NSJOM_1984__14__a20,
     author = {Madarasz Rozalija and Mihajlovi\'c Vesna},
     title = {Some remarks on $p_n$-sequences of algebras},
     journal = {Novi Sad Journal of Mathematics},
     pages = {223-232},
     publisher = {mathdoc},
     volume = {14},
     year = {1984},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1984__14__a20/}
}