TWO CHARACTERIZATION THEOREMS FOR IRROTATIONAL LIGHTLIKE GEOMETRY
نویسندگان
چکیده
منابع مشابه
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ژورنال
عنوان ژورنال: Communications of the Korean Mathematical Society
سال: 2013
ISSN: 1225-1763
DOI: 10.4134/ckms.2013.28.4.809