@article{AUPCDM_2012_4_1_a5,
     author = {G\'orowski, Jan and {\L}omnicki, Adam},
     title = {Cechy r\'ownoboczno\'sci tr\'ojk\k{a}t\'ow},
     journal = {Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia},
     pages = {83--92},
     year = {2012},
     volume = {4},
     number = {1},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/AUPCDM_2012_4_1_a5/}
}