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https://blog.csdn.net/qq_42744358/article/details/92417723
https://zhuanlan.zhihu.com/p/20927674
https://blog.csdn.net/qq_32636341/article/details/81878540
https://wenku.baidu.com/view/7a596fcc6529647d2728529d.html
https://dspcan.homestead.com/files/Ztran/zlap.htm
http://web.cecs.pdx.edu/~tymerski/ece452/6.pdf
http://controlsystemsacademy.com/0003/0003.html#ch2
https://web2.clarkson.edu/class/ee451/Notes/EE451_Chapter6_Notes_F11.pdf
https://blog.csdn.net/weixin_37699468/article/details/89433114
https://wenku.baidu.com/view/4bf2c00abb68a98271fefa0a.html?re=view