Submitted on: 27 June 2020.
Revised on: 11 July 2020.
Accepted on: 02 August 2020.
Upravlenets-The Manager
Submitted on: 12 January 2004.
Revised on: 21 January 2004.
Accepted on: 16 February 2004.
Upravlenets-The Manager---URAL STATE UNIV ECONOMICS
Submitted on: 10 July 2008.
Revised on: 04 August 2008.
Accepted on: 23 August 2008.
Upravlenets-The Manager
Submitted on: 28 March 2014.
Revised on: 28 April 2014.
Accepted on: 06 May 2014.
Upravlenets-The Manager
http://reply.papertrans.cn/4/302/30184/30184-15.png
http://reply.papertrans.cn/4/302/30184/30184-16.png
Submitted on: 25 June 2003.
Revised on: 23 July 2003.
Accepted on: 06 August 2003.
Upravlenets-The Manager---URAL STATE UNIV ECONOMICS
Submitted on: 12 April 2004.
Revised on: 09 May 2004.
Accepted on: 14 May 2004.
Upravlenets-The Manager---URAL STATE UNIV ECONOMICS
Submitted on: 25 September 2020.
Revised on: 09 October 2020.
Accepted on: 29 October 2020.
Upravlenets-The Manager
http://reply.papertrans.cn/4/302/30184/30184-20.png