Igorʹ I͡A︡kovlevich Froi͡a︡nov

title	ISBN-13 (ISBN-10)	year of publication
Bylinnai͡a︡ istorii͡a︡: Raboty raznykh let	978-5-288-01961-6 (5-288-01961-4)	1997
Kievskai͡a︡ Rusʹ: Glavnye cherty sot͡s︡ialʹno-ėkonomicheskogo stroi͡a︡	978-5-288-02402-3 (5-288-02402-2)	1999