I. část
Trigonometrie, GDML_Books, (1952), p. 5-89 / Harvested from
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@inbook{404206,
     title = {I. \v c\'ast},
     booktitle = {Trigonometrie},
     series = {GDML\_Books},
     publisher = {P\v r\'\i rodov\v edeck\'e nakladatelstv\'\i },
     address = {Praha},
     year = {1952},
     pages = {5-89},
     url = {http://dml.mathdoc.fr/item/404206}
}

 (éd.). I. část, dans Trigonometrie, GDML_Books,  (1952), pp. 5-89. http://gdmltest.u-ga.fr/item/404206/