@article{nawa_eguchi_ohkubo_1991, 
  title={Effects of fineness and particle size distribution of cement on the fluidity of cement paste and mortar.}, 
  DOI={10.2208/jscej.1991.433_139}, 
  number={433}, 
  publisher={Japan Society of Civil Engineers}, 
  author={NAWA and EGUCHI and OHKUBO}, 
  year={1991}
  }