| article html file updated | 9 February 2020 11:06 CET | Update | https://www.mdpi.com/2076-3921/7/4/46 |
| article html file updated | 1 October 2019 22:33 CEST | Update | N/A |
| article html file updated | 1 May 2019 09:03 CEST | Update | N/A |
| article html file updated | 17 April 2019 08:58 CEST | Update | N/A |
| article html file updated | 29 March 2019 09:27 CET | Update | N/A |
| article html file updated | 1 May 2018 10:20 CEST | Update | N/A |
| article html file updated | 24 March 2018 13:09 CET | Original file | N/A |
| article xml uploaded. | 24 March 2018 13:08 CET | Original file | https://www.mdpi.com/2076-3921/7/4/46/xml |
| article pdf uploaded. | 24 March 2018 13:08 CET | Version of Record | https://www.mdpi.com/2076-3921/7/4/46/pdf |