@article{CTT100633001,
  author = {R. Nomura and H. Matsuda and R. Masumoto and K. Ueno and Y. Okuda},
  title = {Macroscopic Quantum Tunneling and Avalanche Size Distribution of 4He Crystallization in Aerogel},
  journal = {J. Phys. Soc. Jpn.},
  year = 2011,
}

@article{CTT100617391,
  author = {R. Masumoto and K. Ueno and H. Matsuda and R. Nomura and Y. Okuda},
  title = {Dynamical Transition of 4He Crystallization in a Very High Porosity Aerogel},
  journal = {J. Low Temp. Phys.},
  year = 2011,
}

@article{CTT100596786,
  author = {K. Ueno and R. Masumoto and T. Mimori and A. Osawa and R. Nomura and Y. Okuda},
  title = {Nucleation and avalanche of 4He crystals in aerogel},
  journal = {J. Low Temp. Phys.},
  year = 2010,
}