Using ƒ??letƒ? in javascript

Using ƒ??letƒ? in javascript

References

Reference NO 1

http://www.ams.org/bull/1973-79-01/S0002-9904-1973-13143-X/S0002-9904-1973-13143-X.pdf

Reference NO 2

http://www.eujournal.org/index.php/esj/article/download/1106/1144

Reference NO 3

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.50.9541&rep=rep1&type=ps

Reference NO 4

http://www.lix.polytechnique.fr/~ollivier/PRODUCTION_SCIENT/publications/ecc95.pdf

Reference NO 5

http://www.senaydinmermer.com/index.php?option=com_content&view=article&id=46&Itemid=54

Reference NO 6

http://celentano-dharaharsh.blogspot.com/2013/08/python-captcha-decoder-library.html

Reference NO 7

http://www.ii.uib.no/publikasjoner/texrap/pdf/2003-250.pdf

Reference NO 8

http://docserver.carma.newcastle.edu.au/113/2/95_048-Wang.pdf