共 25 条
[17]
Hahn E., 2008, WORKING PAPER SERIES, V975
[18]
Hastie T., 2009, ELEMENTS STAT LEARNI, V2, DOI DOI 10.1007/978-0-387-84858-7
[19]
Hoover KevinD., 1999, ECONOMET J, V2, P167, DOI DOI 10.1111/1368-423X.00025