| article html file updated | 9 February 2020 02:09 CET | Update | https://www.mdpi.com/1996-1073/11/1/136 |
| article html file updated | 29 September 2019 17:05 CEST | Update | N/A |
| article html file updated | 2 May 2019 04:06 CEST | Update | N/A |
| article html file updated | 18 April 2019 02:13 CEST | Update | N/A |
| article html file updated | 28 March 2019 13:28 CET | Update | N/A |
| article html file updated | 1 February 2018 13:14 CET | Update | N/A |
| article html file updated | 5 January 2018 17:17 CET | Original file | N/A |
| article xml uploaded. | 5 January 2018 17:16 CET | Update | https://www.mdpi.com/1996-1073/11/1/136/xml |
| article pdf uploaded. | 5 January 2018 17:16 CET | Version of Record | https://www.mdpi.com/1996-1073/11/1/136/pdf |