\roman{counter}
This command causes the value of the counter to be printed in roman numerals. The \roman command causes lower case roman numerals, i.e., i, ii, iii..., while the \Roman command causes upper case roman numerals, i.e., I, II, III...
\roman{citac}
Prikaz \roman vysazi hodnotu uvedeneho citace rimskymi cislicemi. Prikaz \roman vysazi tuto hodnotu minuskami (tzn. i, ii, iii, ...), zatimco prikaz \Roman vysazi tuto hodnotu verzalkami(tzn. I, II, ...).