Open J. Discrete Math. Vol.6 No.2, April 22, 2016 DOI:10.4236/ojdm.2016.62011
Open J. Discrete Math. Vol.6 No.2, April 12, 2016 DOI:10.4236/ojdm.2016.62010
Open J. Discrete Math. Vol.6 No.2, April 08, 2016 DOI:10.4236/ojdm.2016.62009
Open J. Discrete Math. Vol.6 No.2, April 08, 2016 DOI:10.4236/ojdm.2016.62008
Open J. Discrete Math. Vol.6 No.2, April 08, 2016 DOI:10.4236/ojdm.2016.62007
Open J. Discrete Math. [ISSUE], [PUBDATE] DOI:[DOI]