Úvod
Imaginární elementy v geometrii, GDML_Books, (1941), p. 4-9 / Harvested from
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@inbook{402976,
     title = {\'Uvod},
     booktitle = {Imagin\'arn\'\i\ elementy v geometrii},
     series = {GDML\_Books},
     publisher = {Jednota \v cesk\'ych matematik\r u a fysik\r u},
     address = {Praha},
     year = {1941},
     pages = {4-9},
     url = {http://dml.mathdoc.fr/item/402976}
}

 (éd.). Úvod, dans Imaginární elementy v geometrii, GDML_Books,  (1941), pp. 4-9. http://gdmltest.u-ga.fr/item/402976/