@misc{involutory+quadratic+transformations+formulated+in+constructional+geometry,
    author = {Czech, Ludmiła},
    title = {Involutory quadratic transformations formulated in constructional geometry},
    address = {Cracow},
    publisher = {Politechnika Krakowska},
    date = {1996},
    ISSN = {0860-097X}
}