Submitted on: 15 April 1998.
Revised on: 27 May 1998.
Accepted on: 02 June 1998.
PHILOSOPHISCHE RUNDSCHAU
Submitted on: 11 February 2014.
Revised on: 12 March 2014.
Accepted on: 25 March 2014.
PHILOSOPHISCHE RUNDSCHAU
http://reply.papertrans.cn/3/245/24487/24487-23.png
http://reply.papertrans.cn/3/245/24487/24487-24.png
http://reply.papertrans.cn/3/245/24487/24487-25.png
http://reply.papertrans.cn/3/245/24487/24487-26.png
Submitted on: 24 December 1998.
Revised on: 27 January 1999.
Accepted on: 03 February 1999.
PHILOSOPHISCHE RUNDSCHAU
http://reply.papertrans.cn/3/245/24487/24487-28.png
http://reply.papertrans.cn/3/245/24487/24487-29.png
http://reply.papertrans.cn/3/245/24487/24487-30.png