1. Reuss G, Disteldorf W, Gramer AO, Hilt A (2003) Ullmann’s Encyclopedia of Industrial Chemistry 15:1–35
2. Walker JF (1964) Formaldehyde. Reinhold ACS Monograph Series, New York
3. Sextro G (2003) Ullmann’s Encyclopedia of Industrial Chemistry 28:509–522
4. Balashov AL, Danov SM, Golovkin AY, Krasnov VL, Ponomarev AN, Borisova IA (1996) Russ J App Chem 69:190–192
5. Balashov AL, Danov SM, Krasnov VL, Chernov AY, Ryabova TA (2002) Russ J Gen Chem 72:744–747