Rotthauwe, J. H., Liesack, W., & Witzel, K. P. The ammonia monooxygenase structural gene amoA as a functional marker: Molecular fine-scale analysis of natural ammonia-oxidizing populations.

Rotthauwe, J. H., W. Liesack, و K. P. Witzel. The Ammonia Monooxygenase Structural Gene AmoA As a Functional Marker: Molecular Fine-scale Analysis of Natural Ammonia-oxidizing Populations.

Rotthauwe, J. H., W. Liesack, و K. P. Witzel. The Ammonia Monooxygenase Structural Gene AmoA As a Functional Marker: Molecular Fine-scale Analysis of Natural Ammonia-oxidizing Populations.