| article html file updated | 6 February 2020 13:09 CET | Update | https://www.mdpi.com/2073-4409/3/4/994 |
| article html file updated | 20 September 2019 14:10 CEST | Update | - |
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| article html file updated | 26 December 2014 11:27 CET | Original file | - |
| article xml file uploaded | 26 December 2014 11:27 CET | Original file | https://www.mdpi.com/2073-4409/3/4/994/xml |
| article pdf uploaded. | 27 October 2014 11:55 CET | Version of Record | https://www.mdpi.com/2073-4409/3/4/994/pdf |
