Kalinkin, Andrew S., Wives and children of Vladimir. Posting to soc.genealogy.medieval (email list GEN-MEDIEVAL) on 8/2/1999. Subject: Dobronega Maria Wladimirowna Kijewskaja. Available at https://groups.google.com/g/soc.genealogy.medieval/c/gcR1UkJmTi0/m/jQq9r4RNgFQJ. Author address: kalinkin at cityline dot ru. Information from this source tagged as [Ref: Andrew Kalinkin SGM 8/2/1999].