J. Appl. Math. Phys. Vol.6 No.12, December 31, 2018 DOI:10.4236/jamp.2018.612225
J. Appl. Math. Phys. Vol.6 No.12, December 31, 2018 DOI:10.4236/jamp.2018.612224
J. Appl. Math. Phys. Vol.6 No.12, December 29, 2018 DOI:10.4236/jamp.2018.612223
J. Appl. Math. Phys. Vol.6 No.12, December 29, 2018 DOI:10.4236/jamp.2018.612222
J. Appl. Math. Phys. Vol.6 No.12, December 27, 2018 DOI:10.4236/jamp.2018.612221
J. Appl. Math. Phys. [ISSUE], [PUBDATE] DOI:[DOI]