Busscher, N., Kahl, J., Andersen, J. O., Huber, M., Mergardt, G., Doesburg, P., et al..  (2010).  
Standardization of the Biocrystallization Method for Carrot Samples. 
Biological Agriculture and Horticulture, (27), 1-23. Retrieved from 
https://www.researchgate.net/profile/Gaby_Mergardt/publication/229045952_Standardization_of_the_Biocrystallization_Method_for_Carrot_Samples/links/09e4150eee55db455d000000.pdf