http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Further Properties of the energy-momentum complex in general relativity
MAGNUSSON, M.: -- Further Properties of the energy-momentum complex in general relativity. 1960. -- (Mat.-fys. Meddelelser. Kong. Dan. Vid. Selskab. 32,6.) -- 1962 -- KB/Ho.
Mat.-fys. Meddelelser. Kong. Dan. Vid. Selskab. 32,6