To cite the ouch package in publications use:
Le Chatelier E., Prifti E. et al. (2013) Richness of Human Gut Microbiome Correlates with Metabolic Markers Nature. 500:541--546
As momr is continually evolving, you may want to cite its version number. Find it with 'help(package=momr)'.
Corresponding BibTeX entry:
@Article{, author = {Emmanuelle Le Chatelier and Trine Nielsen and Junjie Qin and Edi Prifti and Falk Hildebrand and Gwen Falony and Mathieu Almeida}, title = {Richness of Human Gut Microbiome Correlates with Metabolic Markers}, journal = {Nature}, year = {2013}, volume = {500}, pages = {541-546}, url = {http://www.nature.com/nature/journal/v500/n7464/full/nature12506.html}, }