UĞURLU, H. H.;ÇALIŞKAN, A.;KILIÇ, O.2019-04-192019-04-191303-5991http://hdl.handle.net/20.500.12575/61091https://doi.org/10.1501/Commua1_0000000358The new expressions of Gaussion curvature at spacelike congruences019023