ISO/IEC_646
Unicode
X
Ábídí
ISO_2145
ASCII
ISO/IEC_8859-1
ISO_5776
Donald_Knuth
ISO_1073-1
Ṣ
Table_of_mathematical_symbols_by_introduction_date
Títóbi_tàbí_kéré_lẹ́tà
Aristarchian_symbols