@article{AUPCDM_2019_11_1_a6,
     author = {Pieronkiewicz, Barbara and Tanton, James},
     title = {Different ways of solving quadratic equations},
     journal = {Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia},
     pages = {103--125},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPCDM_2019_11_1_a6/}
}