@article{zhang_2016, 
  title={Cross-linguistic Variations of pro Licensing Conditions}, 
  DOI={10.17507/jltr.0703.09}, 
  abstractNote={<jats:p>Null subject languages are generally called pro-drop languages. According to the generative syntactic analysis, languages can be divided into pro-drop and non-pro-drop languages. Subject Agreement (AgrS) is argued to be the licensing condition for the null subject languages. Nevertheless, pro-drop licensing conditions may vary in different languages. This paper analyzes various null subject languages with different pro-drop licensing conditions from cross-linguistic perspective.</jats:p>}, 
  publisher={Academy Publication}, 
  author={Zhang}, 
  year={2016}, 
  month={May}
  }