TY - BOOK AU - He, Zhiguo AU - Krishnamurthy, Arvind AU - Milbradt, Konstantin ED - National Bureau of Economic Research TI - What makes US government bonds safe assets? T2 - NBER Working Paper PY - 2016/// CY - Cambridge PB - NBER KW - NBERWP 22017 KW - E16537.pdf UR - http://elibrary.igidr.ac.in/e-library/working papers/NBER/2016/E16537.pdf ER -