| article html file updated | 8 February 2020 11:37 CET | Update | https://www.mdpi.com/2076-3921/6/3/57 |
| article html file updated | 26 September 2019 02:04 CEST | Update | N/A |
| article html file updated | 3 May 2019 11:09 CEST | Update | N/A |
| article html file updated | 27 March 2019 16:58 CET | Update | N/A |
| article html file updated | 30 September 2017 11:18 CEST | Update | N/A |
| article html file updated | 21 July 2017 10:48 CEST | Update | N/A |
| article html file updated | 21 July 2017 10:47 CEST | Update | N/A |
| article html file updated | 21 July 2017 10:47 CEST | Original file | N/A |
| article xml uploaded. | 21 July 2017 10:45 CEST | Original file | https://www.mdpi.com/2076-3921/6/3/57/xml |
| article pdf uploaded. | 21 July 2017 10:45 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/3/57/pdf |
