User-Agent: *
Host: www.centrbt.ru
Disallow: /index.php$
Disallow: /index.php?&df_my_city=1$
Disallow: /?&df_my_city=1$
Disallow: /index.php?&df_my_city=2$
Disallow: /?&df_my_city=2$

User-agent: Yandex
Host: www.centrbt.ru
Clean-param: utm_source&utm_medium&utm_campaign&utm_term&utm_content
Disallow: /index.php$
Disallow: /index.php?&df_my_city=1$
Disallow: /?&df_my_city=1$
Disallow: /index.php?&df_my_city=2$
Disallow: /?&df_my_city=2$