@article{ZhangLideGrijsetal.2015,
  author    = {Chaoli Zhang and Chengyuan Li and Richard de Grijs and Kenji Bekki and Licai Deng and Simone Zaggia and Stefano Rubele and Andres E. Piatti and Maria-Rosa L. Cioni and Jim Emerson and Bi-Qing For and Vincenzo Ripepi and Marcella Marconi and Valentin D. Ivanov and Li Chen},
  title     = {The vmc survey. XVIII. radial dependence of the Low-Mass, 0.55-0.82M(circle dot) stellar mass function in the galactic globular cluster 47 tucanae},
  journal   = {The astrophysical journal : an international review of spectroscopy and astronomical physics},
  volume    = {815},
  number    = {2},
  doi       = {10.1088/0004-637X/815/2/95},
  year      = {2015},
}