What has the author R Kh Gugov written?

Kirill Sergeevich Gorbachevich has written:

'Pochemu ta nazvany?' -- subject(s): Geographical Names, Names, Geographical, Slavic, Street names, Streets

'Izmenenie norm russkogo literaturnogo iazyka' -- subject(s): Russian language, Usage

'Variantnost' slova i yazykovaya norma'

'Normy sovremennogo russkogo literaturnogo yazyka'