Appl. Math. Vol.8 No.5, May 27, 2017 DOI:10.4236/am.2017.85059
Appl. Math. Vol.8 No.5, May 27, 2017 DOI:10.4236/am.2017.85058
Appl. Math. Vol.8 No.5, May 27, 2017 DOI:10.4236/am.2017.85057
Appl. Math. Vol.8 No.5, May 25, 2017 DOI:10.4236/am.2017.85056
Appl. Math. Vol.8 No.5, May 25, 2017 DOI:10.4236/am.2017.85055
Appl. Math. [ISSUE], [PUBDATE] DOI:[DOI]