@article{CTT100576449,
  author = {Tetsuji Okuda and Phengxay Deevanhxay and Wataru Nishijima and Takao Hasegawa and Mitsumasa Okada},
  title = {Enhancement of Cryptosporidium oocyst removal by coagulation and sedimentation with poly-silicate iron (PSI)},
  journal = {Journal of Chemical Engineering of Japan},
  year = 2006,
}

@article{CTT100576448,
  author = {Tetsuji Okuda and Wataru Nishijima and Phengxay Deevanhxay and Mitsumasa Okada and Takao Hasegawa},
  title = {Improvement of sedimentation by the coagulation using poly-silicate iron for the removal of Cryptosporidium oocyst},
  journal = {Separation Science and Technology},
  year = 2006,
}