Recommendations for the technological design of substations AC higher voltage 35-750 square meters. Approved by the Ministry of Energy, the Russia 30.06.2003 / Rekomendatsii po tekhnologicheskomu proektirovaniyu podstantsiy peremennogo toka s vysshim napryazheniem 35-750 kV. Utverzhdeny Minenergo Rossii 30.06.2003 g.