https://www.proz.com/personal-glossaries/entry/27162131-account-variance-%E1%9E%82%E1%9E%98%E1%9F%92%E1%9E%9B%E1%9E%B6%E1%9E%8F%E2%80%8B%E1%9E%91%E1%9E%B9%E1%9E%80%E1%9E%94%E1%9F%92%E1%9E%9A%E1%9E%B6%E1%9E%80%E1%9F%8B%E1%9E%82%E1%9E%8E%E1%9E%93%E1%9F%81%E1%9E%99%E1%9F%92%E1%9E%99&set_site_lang=pol