| article html file updated | 7 February 2020 03:52 CET | Update | https://www.mdpi.com/1996-1944/9/2/72 |
| article html file updated | 6 May 2019 01:44 CEST | Update | - |
| article html file updated | 26 March 2019 19:20 CET | Original file | - |
| article pdf uploaded. | 22 February 2016 09:44 CET | Updated version of record | https://www.mdpi.com/1996-1944/9/2/72/pdf |
| article xml uploaded. | 22 February 2016 09:44 CET | Update | https://www.mdpi.com/1996-1944/9/2/72/xml |
| article pdf uploaded. | 26 January 2016 08:52 CET | Version of Record | https://www.mdpi.com/1996-1944/9/2/72/pdf-vor |
| article xml uploaded. | 26 January 2016 08:52 CET | Original file | - |
