J Fidler, V Smith, P Fayers, M De Swiet
Fidler J, Smith V, Fayers P, De Swiet M.
Randomised controlled comparative study of methyldopa and oxprenolol in treatment of hypertension in pregnancy.
Br Med J (Clin Res Ed) 1983; 286 :1927
doi:10.1136/bmj.286.6382.1927