卢森尼亚语
Since the International Organization for Standardization (ISO) has an ISO 639-3 designation (rue) for the common Rusyn language, a group of linguists (including Aleksandr Dulichenko), supported a proposal, that was addressed in April 2019 to the ISO, requesting suppression of the code (rue) and division of Rusyn language in two distinctive and separate languages, designated as: the "East Rusyn language" (representing the "Carpathian Rusyn") and the "South Rusyn language" (representing the "Pannonian Rusyn"). In January 2020, the ISO authorities rejected the request.