@article{10_14708_ma_v48i2_7058,
     author = {Ma{\l}gorzata \'Srednicka and Krzysztof J. Szajowski},
     title = {Operation comfort vs. the importance of system components},
     journal = {Mathematica Applicanda},
     pages = { 191--226},
     publisher = {mathdoc},
     volume = {48},
     number = {2},
     year = {2020},
     doi = {10.14708/ma.v48i2.7058},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/ma.v48i2.7058/}
}