@article{10_21136_MB_2014_144146,
     author = {Dr\'abek, Pavel},
     title = {Two notions which affected nonlinear analysis {(Bernard} {Bolzano} lecture)},
     journal = {Mathematica Bohemica},
     pages = {699--711},
     year = {2014},
     volume = {139},
     number = {4},
     doi = {10.21136/MB.2014.144146},
     mrnumber = {3306859},
     zbl = {06433693},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2014.144146/}
}