| article html file updated | 9 February 2020 04:11 CET | Update | https://www.mdpi.com/2076-3921/7/1/20 |
| article html file updated | 30 September 2019 04:29 CEST | Update | N/A |
| article html file updated | 1 May 2019 23:53 CEST | Update | N/A |
| article html file updated | 17 April 2019 22:25 CEST | Update | N/A |
| article html file updated | 28 March 2019 18:01 CET | Update | N/A |
| article html file updated | 1 February 2018 13:54 CET | Update | N/A |
| article html file updated | 24 January 2018 10:54 CET | Original file | N/A |
| article xml uploaded. | 24 January 2018 10:52 CET | Original file | https://www.mdpi.com/2076-3921/7/1/20/xml |
| article pdf uploaded. | 24 January 2018 10:52 CET | Version of Record | https://www.mdpi.com/2076-3921/7/1/20/pdf |
