1. Treaty of Lausanne of 1923 between the Powers, Greece and Turkey,
ratified by Greece in 1923 (FEK* 311)
[...]
Article 39, par. 2:
No restriction shall be imposed on the free use by any [Greek] national of
any language in private intercourse, in commerce, religion, in the press,
or in publications of any kind or at public meetings.
Par. 3: Notwithstanding the exercise of the official language, adequate facilities
shall be given to [Greek] nationals of [non-Greek] speech for the oral use
of their own language before the Courts.
Article 40: Greek nationals belonging to [Moslem minority] shall enjoy the
same treatment and security in law and in fact as other [Greek] nationals.
In particular, they shall have an equal right to establish, manage and control
at their own expense, any charitable, religious and social institutions, any
schools and other establishments for instruction and education, with the right
to use their own language and to exercise their own religion freely therein.
Article 41: As regards public instruction, the [Greek] government will grant
in those towns and districts, where a considerable proportion of Moslem nationals
are resident, adequate facilities for ensuring that in the primary schools
the instruction shall be given to the children of such [Greek] nationals through
the medium of their own language. This provision shall not prevent [Greek]
government from making the teaching of the [Greek] language obligatory in
the said schools.
In towns and districts where there is a considerable proportion of [Greek]
nationals belonging to [Moslem minority], these [minority] shall be assured
an equitable share in the enjoyment and application of the sums which may
be provided out of the public funds under the State, municipal or other budgets
for educational, religious or charitable purposes.
The sums in question shall be paid to the qualified representatives of the
establishments and institutions concerned.