http://reply.papertrans.cn/3/202/20125/20125-31.png
Submitted on: 19 September 2018.
Revised on: 31 October 2018.
Accepted on: 20 November 2018.
JOURNAL OF VISUAL IMPAIRMENT & BLINDNESS
http://reply.papertrans.cn/3/202/20125/20125-33.png
http://reply.papertrans.cn/3/202/20125/20125-34.png
Submitted on: 04 September 2001.
Revised on: 29 September 2001.
Accepted on: 07 October 2001.
JOURNAL OF VISUAL IMPAIRMENT & BLINDNESS
Submitted on: 29 October 2006.
Revised on: 05 December 2006.
Accepted on: 12 December 2006.
JOURNAL OF VISUAL IMPAIRMENT & BLINDNESS