@article{UBHD-68235531, author={Eager, Richard and Lawrence, Jim}, title={The odd-even invariant for graphs}, year={2015}, pages={87-96}, language={eng}, volume={50}, note={Available online: 25 April 2015 ; Gesehen am 22.03.2018}, journal={European journal of combinatorics}, doi={10.1016/j.ejc.2015.03.023}, }