الإتاحة: https://doi.org/10.1086/595679Testhttps://publications.rwth-aachen.de/record/186045Testhttps://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-062498%22Test
الإتاحة: https://doi.org/10.1086/524920Testhttps://publications.rwth-aachen.de/record/185499Testhttps://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-061965%22Test
الإتاحة: https://doi.org/10.1086/527046Testhttps://publications.rwth-aachen.de/record/183445Testhttps://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-060026%22Test
الإتاحة: https://doi.org/10.1086/518596Testhttps://publications.rwth-aachen.de/record/186007Testhttps://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-062462%22Test
الوصول الحر: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-129134Test
الإتاحة: https://doi.org/10.1086/595679Testhttp://infoscience.epfl.ch/record/154498Test
الإتاحة: https://doi.org/10.1103/PhysRevD.79.062001Testhttp://infoscience.epfl.ch/record/154402Test
الإتاحة: https://doi.org/10.1086/527046Testhttp://infoscience.epfl.ch/record/154354Test
الإتاحة: https://doi.org/10.1103/PhysRevD.79.062001Testhttp://hdl.handle.net/11577/3318521Testhttp://oai.aps.org/oai?verb=GetRecord&Identifier=oai:aps.org:PhysRevD.79.062001&metadataPrefix=oai_apsmeta_2Test
الإتاحة: https://bibliographie.ub.rub.de/entry/1bd07bfe-2675-4182-b79f-e47d2745d8e8Test