Can anyone hep me in this regard as our institution doesn't have access to
these.
Here are the URLs
Article 1:
https://www.thieme-connect.com/products/ejournals/abstract/10.1055/s-0032-1328021#FN0611-1
Article 2:
http://onlinelibrary.wiley.com/doi/10.1002/cbdv.200790091/abstract
Article 3:
http://www.sciencedirect.com/science/article/pii/S0031942212005249
Thanking you.