Valery L. Vasil’ev. Etymological observations on vocabulary and place names of the Russian Northwest and North. II. (Hydronyms with the root lin-, terms nalym, nalye, naloj)
RJANO. 2014. № 1 (27), Pages. 252 - 264

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