RT Journal Article SR Electronic T1 The economics of tobacco: myths and realities JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 78 OP 89 DO 10.1136/tc.9.1.78 VO 9 IS 1 A1 Kenneth E Warner YR 2000 UL http://tobaccocontrol.bmj.com/content/9/1/78.abstract AB