How many interesting points should be used in a template attack?

Hailong Zhang, Yongbin Zhou. How many interesting points should be used in a template attack?. Journal of Systems and Software, 120:105-113, 2016. [doi]

@article{ZhangZ16-40,
  title = {How many interesting points should be used in a template attack?},
  author = {Hailong Zhang and Yongbin Zhou},
  year = {2016},
  doi = {10.1016/j.jss.2016.07.028},
  url = {http://dx.doi.org/10.1016/j.jss.2016.07.028},
  researchr = {https://researchr.org/publication/ZhangZ16-40},
  cites = {0},
  citedby = {0},
  journal = {Journal of Systems and Software},
  volume = {120},
  pages = {105-113},
}