@article{10_14708_ma_v39i2_179,
     author = {Krzysztof Opalski and Katarzyna Kacprzak and Kamil Maciejczyk and Micha{\l} Paw{\l}owski},
     title = {Modelling the {Polish} energy market},
     journal = {Mathematica Applicanda},
     pages = { 105--114},
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {2011},
     doi = {10.14708/ma.v39i2.179},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/ma.v39i2.179/}
}