| article html file updated | 6 February 2020 02:27 CET | Update | https://www.mdpi.com/2076-3425/3/2/877 |
| article html file updated | 8 May 2019 04:26 CEST | Update | - |
| article html file updated | 20 March 2019 23:21 CET | Update | - |
| article html file updated | 17 June 2015 09:56 CEST | Update | - |
| article html file updated | 20 May 2014 08:38 CEST | Original file | - |
| article xml file uploaded | 20 May 2014 08:37 CEST | Original file | https://www.mdpi.com/2076-3425/3/2/877/xml |
| article pdf uploaded. | 3 June 2013 12:18 CEST | Version of Record | https://www.mdpi.com/2076-3425/3/2/877/pdf |
