E. Fortuin, A. Israeli. Modal particles and aspectuality: znaj and sebe in Russian
RJANO. 2012. № 2 (24), Pages. 107 - 131

Dmitri V. Sitchinava. The particles bylo and byvalo in the eighteenth-century Russian
RJANO. 2012. № 2 (24), Pages. 257 - 284

Valery L. Vasil’ev. Vr’ev and ur’ev (etymology, semantics, geographic distribution)
RJANO. 2011. № 1 (21), Pages. 241 - 250