@inbook{400841,
title = {4. Men\v s\'\i\ \v s\'\i \v rka},
booktitle = {Matematika v dev\'\i ti kapitol\'ach},
series = {GDML\_Books},
publisher = {Katedra didaktiky matematiky MFF UK},
address = {Praha},
year = {2008},
pages = {104-123},
url = {http://dml.mathdoc.fr/item/400841}
}
(éd.). 4. Menší šířka, dans Matematika v devíti kapitolách, GDML_Books, (2008), pp. 104-123. http://gdmltest.u-ga.fr/item/400841/