| article html file updated | 6 February 2020 02:21 CET | Update | https://www.mdpi.com/2076-3425/3/2/849 |
| article html file updated | 8 May 2019 04:39 CEST | Update | - |
| article html file updated | 20 March 2019 23:05 CET | Update | - |
| article html file updated | 17 June 2015 09:43 CEST | Update | - |
| article html file updated | 20 May 2014 08:37 CEST | Original file | - |
| article xml file uploaded | 20 May 2014 08:37 CEST | Original file | https://www.mdpi.com/2076-3425/3/2/849/xml |
| article pdf uploaded. | 29 May 2013 16:22 CEST | Updated version of record | https://www.mdpi.com/2076-3425/3/2/849/pdf |
| article pdf uploaded. | 28 May 2013 11:59 CEST | Version of Record | https://www.mdpi.com/2076-3425/3/2/849/pdf-vor |
