2ISO 3016-94 International Standards. Petroleum Products-Determination of Pour Point, International Organization for Standardization. Switzerland, 1994.
3JIS K 2269-87 Japanese Industrial Standard. Testing Method for Pour Point and Cloud Point of Crude Oil and Petroleum Products, Japanese Standards Association, 1987.
8ASTM D 97-96a Standard Test Method for Pour Point of Petroleum Products,Annual Book of ASTM, West Conshohocken of USA. 2001.
9ASTM D5949-96 Standard Test Method for Pour Point of Petroleum Products (Automatic Pressure Pulsing Method),Annual Book of ASTM, West Conshohocken of USA. 2001.
10ASTM D5950-96 Standard Test Method for Pour Point of Petroleum Products (Automatic Tilt Method), Annual Book of ASTM, West Conshohocken of USA. 2001.