| article html file updated | 7 February 2020 07:23 CET | Update | https://www.mdpi.com/1996-1073/9/4/292 |
| article html file updated | 5 May 2019 18:25 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:06 CET | Update | N/A |
| article html file updated | 28 April 2016 08:00 CEST | Update | N/A |
| article html file updated | 20 April 2016 12:29 CEST | Update | N/A |
| article xml uploaded. | 20 April 2016 12:28 CEST | Update | https://www.mdpi.com/1996-1073/9/4/292/xml |
| article pdf uploaded. | 20 April 2016 12:28 CEST | Updated version of record | https://www.mdpi.com/1996-1073/9/4/292/pdf |
| article html file updated | 16 April 2016 08:43 CEST | Original file | N/A |
| article pdf uploaded. | 16 April 2016 08:42 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/4/292/pdf-vor |
