| article html file updated | 8 February 2020 10:21 CET | Update | https://www.mdpi.com/2076-3921/6/3/54 |
| article html file updated | 25 September 2019 19:18 CEST | Update | N/A |
| article html file updated | 3 May 2019 13:38 CEST | Update | N/A |
| article html file updated | 30 September 2017 11:18 CEST | Update | N/A |
| article html file updated | 6 July 2017 16:07 CEST | Original file | N/A |
| article xml uploaded. | 6 July 2017 16:06 CEST | Original file | https://www.mdpi.com/2076-3921/6/3/54/xml |
| article pdf uploaded. | 6 July 2017 16:06 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/3/54/pdf |
