M Lison; S H Blondheim; R N Melmed. A polymorphism of the ability to smell urinary metabolites of asparagus. [online]. Br Med J, 20. december 1980, [cit. 2019-04-21]. Dostupné online.DOI:https://doi.org/10.1136/bmj.281.6256.1676 (po anglicky)
M Lison; S H Blondheim; R N Melmed. A polymorphism of the ability to smell urinary metabolites of asparagus. [online]. Br Med J, 20. december 1980, [cit. 2019-04-21]. Dostupné online.DOI:https://doi.org/10.1136/bmj.281.6256.1676 (po anglicky)