Open J. Discrete Math. Vol.6 No.4, October 28, 2016 DOI:10.4236/ojdm.2016.64028
Open J. Discrete Math. Vol.6 No.4, October 28, 2016 DOI:10.4236/ojdm.2016.64027
Open J. Discrete Math. Vol.6 No.4, October 28, 2016 DOI:10.4236/ojdm.2016.64026
Open J. Discrete Math. Vol.6 No.4, October 14, 2016 DOI:10.4236/ojdm.2016.64025
Open J. Discrete Math. Vol.6 No.4, September 21, 2016 DOI:10.4236/ojdm.2016.64024
Open J. Discrete Math. [ISSUE], [PUBDATE] DOI:[DOI]