Appl. Math. Vol.3 No.12 A, January 14, 2013 DOI:10.4236/am.2012.312A277
Appl. Math. Vol.3 No.12 A, December 31, 2012 DOI:10.4236/am.2012.312A299
Appl. Math. Vol.3 No.12 A, December 31, 2012 DOI:10.4236/am.2012.312A298
Appl. Math. Vol.3 No.12 A, December 31, 2012 DOI:10.4236/am.2012.312A297
Appl. Math. Vol.3 No.12 A, December 31, 2012 DOI:10.4236/am.2012.312A296
Appl. Math. [ISSUE], [PUBDATE] DOI:[DOI]