Jinbu" de linian: 20 shiji de tiaozhan Jyh-chyang Fang In: "Xin Shixue". Vol 12. Pp 131-172. 2001 2 substantive philosophy of history progress/decline
Lun sibian de lishi zhexue Ximong An In: "Shixue Lilun Yanjiu". Pp 100-111. 2001 2 substantive philosophy of history progress/decline