@article{10_14708_dm_v39i0_6344,
     author = {Bo\.zena Maj-Tatsis and Miros{\l}awa Sajka},
     title = {The {Ninth} and the {Tenth} {Congress} of the {European} {Research} in {Mathematics} {Education} {(CERME} 9 and {CERME} 10)},
     journal = {Didactica Mathematicae},
     publisher = {mathdoc},
     volume = {39},
     year = {2017},
     doi = {10.14708/dm.v39i0.6344},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v39i0.6344/}
}