| article html file updated | 7 February 2020 19:00 CET | Update | https://www.mdpi.com/2076-3921/5/4/45 |
| article html file updated | 22 September 2019 08:27 CEST | Update | N/A |
| article html file updated | 4 May 2019 20:32 CEST | Update | N/A |
| article html file updated | 27 December 2016 11:55 CET | Update | N/A |
| article html file updated | 2 December 2016 10:59 CET | Original file | N/A |
| article xml uploaded. | 2 December 2016 10:58 CET | Original file | https://www.mdpi.com/2076-3921/5/4/45/xml |
| article pdf uploaded. | 2 December 2016 10:58 CET | Version of Record | https://www.mdpi.com/2076-3921/5/4/45/pdf |
