Janosch Delcker, Risk of bioweapon attack growing, Dutch defense minister says, in POLITICO, Munich, 18 febbraio 2018. URL consultato il 5 maggio 2020.
«Bijlevel, a member of the centrist Christian Democratic Appeal party, said that the technology for creating biological weapons had advanced dramatically in recent years, while at the same time "the international community continues to underestimate this risk".»