| article html file updated | 6 February 2020 15:59 CET | Update | https://www.mdpi.com/1996-1944/8/2/684 |
| article html file updated | 7 May 2019 00:55 CEST | Update | - |
| article html file updated | 25 March 2019 21:50 CET | Update | - |
| article html file updated | 21 August 2015 07:43 CEST | Update | - |
| article html file updated | 3 March 2015 07:03 CET | Original file | - |
| article xml file uploaded | 3 March 2015 07:03 CET | Original file | https://www.mdpi.com/1996-1944/8/2/684/xml |
| article pdf uploaded. | 16 February 2015 10:51 CET | Updated version of record | https://www.mdpi.com/1996-1944/8/2/684/pdf |
| article pdf uploaded. | 16 February 2015 08:49 CET | Version of Record | https://www.mdpi.com/1996-1944/8/2/684/pdf-vor |
