Structure of anatoxin-a(S)
<a href="//commons.wikimedia.org/wiki/User:Leyo" title="User:Leyo">Leyo</a>
2010-06
<span class="int-own-work" lang="en">Own work</span><br><a rel="nofollow" class="external text" href="http://www.who.int/water_sanitation_health/resourcesquality/toxcyanbegin.pdf">Toxic Cyanobacteria in Water: A guide to their public health consequences, monitoring and management, p. 66</a>