Meyer TD, Schrader J, Ridley M, Lex C. The hypomania checklist (HCL) - systematic review of its properties to screen for bipolar disorders. Compr Psychiatry. 2014 Jul;55(5):1310-21. doi: 10.1016/j.comppsych.2014.03.002
Niaura R, Britt DM, Shadel WG, Goldstein M, Abrams D, Brown R. Symptoms of depression and survival experience among three samples of smokers trying to quit. Psychol Addict Behav. 2001 Mar 1;15(1):13-7.