Mall:RubberBible92nd
Haynes, William M., red (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton (FL): CRC Press. ISBN 1439855110.
Haynes, William M., red (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton (FL): CRC Press. ISBN 1439855110 .