Submitted on: 07 February 2020.
Revised on: 02 March 2020.
Accepted on: 10 March 2020.
PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-MATHEMATICAL SCIENCES
Submitted on: 26 August 2009.
Revised on: 29 September 2009.
Accepted on: 06 October 2009.
PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-MATHEMATICAL SCIENCES
http://reply.papertrans.cn/3/253/25283/25283-13.png
Submitted on: 05 October 2000.
Revised on: 03 November 2000.
Accepted on: 17 November 2000.
PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-MATHEMATICAL SCIENCES
Submitted on: 15 June 2018.
Revised on: 24 July 2018.
Accepted on: 17 August 2018.
PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-MATHEMATICAL SCIENCES
http://reply.papertrans.cn/3/253/25283/25283-16.png
Submitted on: 28 October 2001.
Revised on: 25 November 2001.
Accepted on: 15 December 2001.
PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-MATHEMATICAL SCIENCES
Submitted on: 05 August 2015.
Revised on: 11 September 2015.
Accepted on: 28 September 2015.
PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-MATHEMATICAL SCIENCES
http://reply.papertrans.cn/3/253/25283/25283-19.png
Submitted on: 11 December 2016.
Revised on: 11 January 2017.
Accepted on: 17 January 2017.
PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-MATHEMATICAL SCIENCES