| article html file updated | 6 February 2020 18:45 CET | Update | https://www.mdpi.com/2076-0817/4/2/256 |
| article html file updated | 6 May 2019 19:46 CEST | Update | - |
| article html file updated | 26 March 2019 02:54 CET | Update | - |
| article html file updated | 8 September 2015 06:05 CEST | Update | - |
| article xml file uploaded | 8 September 2015 06:05 CEST | Update | https://www.mdpi.com/2076-0817/4/2/256/xml |
| article html file updated | 21 August 2015 12:19 CEST | Update | - |
| article html file updated | 7 July 2015 10:59 CEST | Update | - |
| article xml file uploaded | 7 July 2015 10:59 CEST | Update | - |
| article html file updated | 22 May 2015 09:51 CEST | Original file | - |
| article xml file uploaded | 22 May 2015 09:51 CEST | Original file | - |
| article pdf uploaded. | 20 May 2015 10:05 CEST | Updated version of record | https://www.mdpi.com/2076-0817/4/2/256/pdf |
| article pdf uploaded. | 19 May 2015 13:01 CEST | Version of Record | https://www.mdpi.com/2076-0817/4/2/256/pdf-vor |
