@article{TM2_2014_XVII_2_a0,
     author = {Milosav Marjanovi\'c and Aleksandra Mandi\'c and Marijana Zelji\'c},
     title = {Structuring the subject matter of arithmetic {I}},
     journal = {The Teaching of Mathematics},
     pages = {51 },
     publisher = {mathdoc},
     volume = {XVII},
     number = {2},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM2_2014_XVII_2_a0/}
}