Nutrition for rabbits

Calcium

 * LafeberVet.com, Calcium Homeostasis in the Rabbit

Vitamin D

 * Bright Eyes Sanctuary, The Truth About Vitamin D: is it the answer to rabbit dental disease?

Vitamin E
Below are some articles with more information about the importance of Vitamin E for your rabbits.
 * Examiner.com, Phyllis O'Beollain, Is your rabbit getting enough Vitamin E?