@article{10_14708_dm_v1i01_7016,
     author = {Roman Duda},
     title = {Zasada paralelizmu w dydaktyce},
     journal = {Didactica Mathematicae},
     pages = { 127--137},
     publisher = {mathdoc},
     volume = {1},
     number = {01},
     year = {1982},
     doi = {10.14708/dm.v1i01.7016},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v1i01.7016/}
}