you can reference to this paper
http://www.cnki.net/KCMS/detail/detail.aspx?QueryID=23&CurRec=9&recid=&filename=1014002647.nh&dbname=CMFDLAST2014&dbcode=CMFD&pr=&urlid=&yx=&v=MjAxNDJDVVJMNmZZZVptRmk3a1VyN01WRjI2R3JPNEhOZklxSkViUElSOGVYMUx1eFlTN0RoMVQzcVRyV00xRnI=