| article html file updated | 6 February 2020 05:15 CET | Update | https://www.mdpi.com/2076-393X/1/4/513 |
| article html file updated | 7 May 2019 22:40 CEST | Update | - |
| article html file updated | 21 March 2019 06:54 CET | Update | - |
| article html file updated | 16 December 2014 04:58 CET | Update | - |
| article xml file uploaded | 16 December 2014 04:58 CET | Update | https://www.mdpi.com/2076-393X/1/4/513/xml |
| article html file updated | 14 November 2014 11:31 CET | Original file | - |
| article xml file uploaded | 14 November 2014 11:31 CET | Original file | - |
| article pdf uploaded. | 30 October 2013 14:56 CET | Version of Record | https://www.mdpi.com/2076-393X/1/4/513/pdf |
