double header. Formula1.com. 2020-06-09 [2020-08-20]. (原始内容存档于2020-06-09). Herrero, Daniel. Belgian GP threatened by extension of ban on mass gatherings
Thomas M. Compared with Feeding Infants Breast Milk or Cow-Milk Formula, Soy Formula Feeding Does Not Affect Subsequent Reproductive Organ Size at 5 Years