only a cursory influence on the patriarchal civilization of Slavs. (Vaillant & Meillet 1934:508) ^ cf. Novotná & Blažek:2007 with references. "Classical glottochronology" conducted by Czech Slavist M. Čejka in 1974 dates the Balto-Slavic split to -910±340 BCE, Sergei Starostin in 1994 dates it to 1210 BCE , and "recalibrated glottochronology"