@BOOK{ Book!D - 95696056,
AUTHOR = "Callahan, James.",
TITLE = "The geometry of spacetime :an introduction to special and general relativity",
LIBRARY= "کتابخانه مرکزي و مرکز اسناد دانشگاه سمنان",
SUBJECT = "، Relativity )Physics(,، Space and time,، Algebras, Linear,، Calculus of variations,، Mathematical physics",
URL = "/book/95696056/The-geometry-of-spacetime-an-introduction-to-spec/"}