Appl. Math. Vol.9 No.2, February 28, 2018 DOI:10.4236/am.2018.92013
Appl. Math. Vol.9 No.2, February 28, 2018 DOI:10.4236/am.2018.92012
Appl. Math. Vol.9 No.2, February 28, 2018 DOI:10.4236/am.2018.92011
Appl. Math. Vol.9 No.2, February 28, 2018 DOI:10.4236/am.2018.92010
Appl. Math. Vol.9 No.2, February 22, 2018 DOI:10.4236/am.2018.92009
Appl. Math. [ISSUE], [PUBDATE] DOI:[DOI]