@patent{castillo2020fibrillar,
  title = {Fibrillar structures to reduce viscous drag on aerodynamic and hydrodynamic wall surfaces},
  month = mar,
  year = {2020},
  note = {US Patent 10,830,261},
  author = {Castillo, Luciano and Aksak, Burak and Sitti, Metin},
  month_numeric = {3}
}