| article html file updated | 6 February 2020 16:00 CET | Update | https://www.mdpi.com/1996-1944/8/2/751 |
| article html file updated | 7 May 2019 00:54 CEST | Update | N/A |
| article html file updated | 25 March 2019 21:50 CET | Update | N/A |
| article html file updated | 21 August 2015 07:43 CEST | Update | N/A |
| article html file updated | 28 February 2015 03:10 CET | Original file | N/A |
| article xml file uploaded | 28 February 2015 03:10 CET | Original file | https://www.mdpi.com/1996-1944/8/2/751/xml |
| article pdf uploaded. | 16 February 2015 09:07 CET | Version of Record | https://www.mdpi.com/1996-1944/8/2/751/pdf |
