@article{TM2_2000_III_2_a4,
     author = {Vladimir Jankovi\'c},
     title = {Divided {Differences}},
     journal = {The Teaching of Mathematics},
     pages = {115 },
     year = {2000},
     volume = {III},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM2_2000_III_2_a4/}
}