@article{TM2_2016_XIX_2_a3,
     author = {Sergei Abramovich},
     title = {Exploring quadratic equations with digital tools in mathematics teacher education},
     journal = {The Teaching of Mathematics},
     pages = {84 },
     publisher = {mathdoc},
     volume = {XIX},
     number = {2},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM2_2016_XIX_2_a3/}
}