Fantastic parity effects on the electronic and magnetic properties of zigzag graphene nanoribbons with side-attached trans-polyacetyleneQuan Li, Liang Xu, Ling-Ling Wang, Kai-Wu Luo, Wei-Qing Huang, Xiao-Fei Li and Ya-Bin YuEPL, 111 1 (2015) 17006DOI: https://doi.org/10.1209/0295-5075/111/17006