| article html file updated | 11 February 2020 15:46 CET | Update | https://www.mdpi.com/2076-3921/8/2/40 |
| article html file updated | 14 October 2019 22:19 CEST | Update | N/A |
| article html file updated | 26 April 2019 17:21 CEST | Update | N/A |
| article html file updated | 12 April 2019 13:16 CEST | Update | N/A |
| article html file updated | 3 April 2019 19:47 CEST | Update | N/A |
| article html file updated | 1 March 2019 21:34 CET | Update | N/A |
| article html file updated | 28 February 2019 23:05 CET | Update | N/A |
| article html file updated | 13 February 2019 13:43 CET | Original file | N/A |
| article pdf uploaded. | 13 February 2019 13:42 CET | Version of Record | https://www.mdpi.com/2076-3921/8/2/40/pdf |
| article xml uploaded. | 13 February 2019 13:42 CET | Update | https://www.mdpi.com/2076-3921/8/2/40/xml |
| article xml file uploaded | 13 February 2019 13:42 CET | Original file | N/A |