2Rohrig Timothy P,Moore Christine.The determination of morphine in urine and oral fluid following ingestion of poppy seeds. Journal of analytical toxicology . 2003
3Lachenmeier Dirk W,Sproll Constanze,Musshoff Frank.Poppy seed foods and opiate drug testing--where are we today?. Therapeutic Drug Monitoring . 2009
4Manfred R Moeller,Karin Hammer,Oliver Engel.??Poppy seed consumption and toxicological analysis of blood and urine samples(J)Forensic Science International . 2004 (2)