Title of article :
On the existence of light-like geodesics on conformally stationary Lorentzian manifolds Original Research Article
Author/Authors :
Paolo Piccione، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1997
Keywords :
Fermatיs principle , general relativity , light rays
Journal title :
Nonlinear Analysis Theory, Methods & Applications
Journal title :
Nonlinear Analysis Theory, Methods & Applications
