@article{hu_nanopoulosa_2011, 
  title={Hopf-Wess-Zumino term in the effective action of the 6d, (2, 0) field theory revisted}, 
  volume={2011}, 
  DOI={10.1007/jhep10(2011)054}, 
  number={10}, 
  publisher={Springer Nature}, 
  author={Hu and Nanopoulosa}, 
  year={2011}
  }