Why is Time Frame-dependent in Relativity? - Essay subtitled "Minkowski's spacetime as a Kantian 'condition of possibility' for relativistic calculations". By M. Szirko. - http://philsci-archive.pitt.edu/archive/00002462/
Stanford Encyclopedia of Philosophy: The Hole Argument - The hole argument is an attempt to illustrate how spacetime substantivalism causes errors in a large class of spacetime theories; by John D. Norton. - http://plato.stanford.edu/entries/spacetime-holearg/