Suspected Impaired Driving Case Involving α-Pyrrolidinovalerophenone, Methylone and Ethylone.Published in:Journal of Analytical Toxicology, 2014, v. 38, n. 8, p. 615, doi. 10.1093/jat/bku073By:Knoy, Justin L.;Peterson, Brianna L.;Couper, Fiona J.Publication type:Article