"7" . "1993-04-01T00:00:00Z"^^ . "3001-3012" . "QCD sum rules and neutron-proton mass difference"@nl . . "Yang KC" . . . . . . . . . "10015904" . "QCD sum rules and neutron-proton mass difference"@en . . "wetenschappelijk artikel"@nl . . . . . . . . . "10.1103/PHYSREVD.47.3001" . "47" . . . . . . "QCD sum rules and neutron-proton mass difference"@nl . "scientific article published on 01 April 1993"@en . . "QCD sum rules and neutron-proton mass difference"@nl . "QCD sum rules and neutron-proton mass difference"@en . . "QCD sum rules and neutron-proton mass difference"@en . . "art\u00EDculu cient\u00EDficu espubliz\u00E1u n'abril de 1993"@ast . "1993PhRvD..47.3001Y" . . . "QCD sum rules and neutron-proton mass difference"@en . "Kisslinger LS" . . "im April 1993 ver\u00F6ffentlichter wissenschaftlicher Artikel"@de . . . . . . . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F, \u043E\u043F\u0443\u0431\u043B\u0456\u043A\u043E\u0432\u0430\u043D\u0430 \u0443 \u043A\u0432\u0456\u0442\u043D\u0456 1993"@uk . . .