| Http://: https://pubmed.ncbi.nlm.nih.gov/16504263/ |
| Http://: http://www.sciencedirect.com/science/article/pii/S0090429505013439 |
| Http://: https://pubmed.ncbi.nlm.nih.gov/16504263/ |
| Http://: http://www.sciencedirect.com/science/article/pii/S0090429505013439 |