https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763029731361&signature=7609d6d73483418808e85213f7bb3e25&articleTitle=Stochastic+Approximation+and+Recursive+Algorithms+and+Applications&articleAuthor=Harold+J.+Kushner%2C+G.+George+Yin&publicationTitle=Stochastic+Approximation+and+Recursive+Algorithms+and+Applications&language=&publicationType=1&publishYear=2003&isn=9780387008943&publisher=Springer+New+York