J. Appl. Math. Phys. Vol.8 No.11, November 30, 2020 DOI:10.4236/jamp.2020.811198
J. Appl. Math. Phys. Vol.8 No.11, November 30, 2020 DOI:10.4236/jamp.2020.811197
J. Appl. Math. Phys. Vol.8 No.11, November 30, 2020 DOI:10.4236/jamp.2020.811196
J. Appl. Math. Phys. Vol.8 No.11, November 30, 2020 DOI:10.4236/jamp.2020.811199
J. Appl. Math. Phys. Vol.8 No.11, November 27, 2020 DOI:10.4236/jamp.2020.811195
J. Appl. Math. Phys. [ISSUE], [PUBDATE] DOI:[DOI]