Phonetic transliteration of names ending in '-slavski' / '-slavicki' (Polish, Russian, Serbian, etc.):
斯 'sī' +
拉 'lā' +
维 'wéi' +
基 'jī.' The
斯-
拉-
夫 (Sī-lā-fū) part also turns up in
斯拉夫人 (Slavs), so seeing
斯拉 is a strong cue for a Slavic-language source name.