Conrad, R. Emeriti Methanogenic Degradation and Microbial Metabolism of Trace Gases, Max Planck Institute for Terrestrial Microbiology, Max Planck Society;
Jia, Z., & Conrad, R. (2009). Bacteria rather than archaea dominate microbial ammonia oxidation in an agricultural soil. Environmental Microbiology, 11, 1658-1671.