- Author: Вл. Овчаров Цв. Такева
- Language: Bulgarian
- Year: 2015
- Author: Овчаров Н.Е.
- Language: Русский
- Year: 1965
- Author: Овчаров К.Е.
- Language: Русский
- Year: 1952
- Author: А. О. Овчаров
- Language: Русский
- Year: 2009
- Author: Овчаров А. О.
- Language: Русский
- Author: В. Ванков Вл. Овчаров
- Language: Bulgarian
- Year: 2012
- Author: Голубь П.Д. Овчаров А.В.
- Language: Русский
- Year: 2009
- Author: Овчаров Л. А.
- Language: Русский
