1. a Badische Anilin und Soda Fabrik, DR Patent 415, 686; 441,443; 462, 837 (1923); US Patent 1,558,559; 1,569,775(1923).
2. O Schmidt and K Ufers, D Patent 571,355; 571,356; 580,705 (1928).
3. P Davies, F F Snowdon, G W Bridger, D O Hughes and P W Young, UK Patent No 1010871.
4. Catalytic synthesis of methanol from CO/H2I. Phase composition, electronic properties, and activities of the Cu/ZnO/M2O3 catalysts