000			00471nam a2200145Ia 4500
008			230130s9999||||xx |||||||||||||| ||und||
020			_a9783319512112
100			_aAlberto Vecchiato
245		0	_aVariational Approach to Gravity Field Theories
250			_a1st ed. 2017
260			_bSpringer International Publishing _c2017
440			_aUndergraduate Lecture Notes in Physics
650			_aPhysics and Astronomy
856			_uhttps://doi.org/10.1007/978-3-319-51211-2
999			_c14464 _d14464