@inbook{401349, title = {20. Transformace p\'ar\r u matic}, booktitle = {Z\'aklady teorie matic}, series = {GDML\_Books}, publisher = {Academia}, address = {Praha}, year = {1971}, pages = {144-146}, url = {http://dml.mathdoc.fr/item/401349} }
(éd.). 20. Transformace párů matic, dans Základy teorie matic, GDML_Books, (1971), pp. 144-146. http://gdmltest.u-ga.fr/item/401349/