1. Animal Welfare Standards for Layers- Cage-free;AHA,2013
2. California Health and Safety Code Section 25990-25994;CA,2013
3. New Shell Egg Food Safety Regulations;CDFA,2013
4. Emissions of ammonia, nitrous oxide, and methane from aviaries with organic laying hen husbandry;Dekker;Biosyst. Eng.,2011
5. CAPECAB Part II: calculating barn ventilation and emission rates;Eisentraut,2004