RT Journal Article SR Electronic T1 A MATHEMATICAL APPROACH TO EPIDEMIC CONTROL JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 186 OP 187 VO 27 IS 176 A1 R. E. Hope-Simpson YR 1977 UL http://bjgp.org/content/27/176/186.3.abstract AB