Fig. 8
From: Further results on edge even graceful labeling of the join of two graphs
![Fig. 8](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs42787-020-00077-5/MediaObjects/42787_2020_77_Fig8_HTML.png)
An edge even graceful labeling of the double cone \( ~\overline {K}_{2} + ~C_{2} \)
From: Further results on edge even graceful labeling of the join of two graphs
An edge even graceful labeling of the double cone \( ~\overline {K}_{2} + ~C_{2} \)