One of the first known uses of Latin script to typeset a Czech text
Iec 62106-2009, PDF, Frequency Modulation
Zhe (Cyrillic) - Wikipedia
Vertrag des Verkehrsministeriums mit CTS Eventim zur Erhebung der PKW-Maut - FragDenStaat
ż - latin small letter z with dot above - ASCII Code
ᵶ, latin small letter z with middle tilde
Charbase: Latin Extended-A
ASCII control characters (character code 0-31) - PDF Free Download
Diacritic - Wikiwand
MUFI character recommendation - Medieval Unicode Font Initiative
Unicode to ASCII Character Mapping Table, PDF, Latin Script
How common is the letter “Ż” in Polish? - Quora
ſ - Wiktionary, the free dictionary
A Pronunciation Guide To The Polish Alphabet
ScriptSource - Entry - Phonetic Symbol Guide