| article html file updated | 8 February 2020 10:33 CET | Update | https://www.mdpi.com/2076-3921/6/3/44 |
| article html file updated | 25 September 2019 20:21 CEST | Update | N/A |
| article html file updated | 3 May 2019 13:14 CEST | Update | N/A |
| article html file updated | 30 September 2017 11:19 CEST | Update | N/A |
| article html file updated | 9 July 2017 11:25 CEST | Original file | N/A |
| article xml uploaded. | 9 July 2017 11:24 CEST | Original file | https://www.mdpi.com/2076-3921/6/3/44/xml |
| article pdf uploaded. | 9 July 2017 11:24 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/3/44/pdf |
