1. 2. WHO Technical Report Series (1952 ) Third report . WHO Expert Committee on Drugs Liable to Produce. No. 57.
2. 3. WHO Technical Report Series (1957 ) Seventh report . WHO Expert Committee on Addiction-Producing Drugs, No. 116.
3. 4. WHO Technical Report Series (1964 ) Thirteenth report . WHO Expert Committee on Addiction-Producing Drugs, No. 273.