@inproceedings{asbupel_retnawati_muhardis_yovita_munadi_2021, 
  title={Analysis of Students' Difficulties in Answering Questions on the Chemistry National Standardized School Exam in Kupang}, 
  DOI={10.2991/assehr.k.210305.032}, 
  publisher={Atlantis Press}, 
  author={Asbupel, Fatnan and Retnawati, Heri and Muhardis and Yovita, Seriana and Munadi, Sudji}, 
  year={2021}
  }