| article html file updated | 7 February 2020 02:29 CET | Update | https://www.mdpi.com/2218-1989/5/4/794 |
| article html file updated | 6 May 2019 04:29 CEST | Update | - |
| article html file updated | 26 March 2019 16:52 CET | Update | - |
| article html file updated | 28 December 2015 09:52 CET | Original file | - |
| article xml file uploaded | 28 December 2015 09:52 CET | Update | https://www.mdpi.com/2218-1989/5/4/794/xml |
| article pdf uploaded. | 22 December 2015 09:46 CET | Updated version of record | https://www.mdpi.com/2218-1989/5/4/794/pdf |
| article pdf uploaded. | 21 December 2015 15:26 CET | Version of Record | https://www.mdpi.com/2218-1989/5/4/794/pdf-vor |
| article xml uploaded. | 21 December 2015 15:26 CET | Original file | - |
