@article{10_14708_dm_v7i01_6913,
     author = {Klaus Hartig},
     title = {O dowodach i dowodzeniu w nauczaniu matematyki. {Kilka} tez i przyk{\l}ad\'ow},
     journal = {Didactica Mathematicae},
     pages = { 77--94},
     publisher = {mathdoc},
     volume = {7},
     number = {01},
     year = {1987},
     doi = {10.14708/dm.v7i01.6913},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v7i01.6913/}
}