@article{schakel_romanova_2021, 
  title={Horizontal and vertical spill-over in multilevel electoral systems}, 
  DOI={10.1080/13597566.2021.1934455}, 
  publisher={Informa UK Limited}, 
  author={Schakel, Arjan H. and Romanova, Valentyna}, 
  year={2021}, 
  month={Jun}
  }