Knuth，DonaldE. The Art of Computer Programming，Volume 2:Seminumerical Algorithms .3rd ed.Boston: Addison-Wesley，1998. w+ZrKYe92xCKIe2eCQLUueOon0dm3EG9SFpSaMXAg/FjSQTx/PKhYDSHtIQ19Lzb
