| article html file updated | 7 February 2020 14:26 CET | Update | https://www.mdpi.com/2077-1312/4/3/57 |
| article html file updated | 22 September 2019 00:20 CEST | Update | N/A |
| article html file updated | 5 May 2019 05:05 CEST | Update | N/A |
| article html file updated | 27 October 2017 11:04 CEST | Update | N/A |
| article html file updated | 5 September 2016 10:38 CEST | Original file | N/A |
| article xml uploaded. | 5 September 2016 10:37 CEST | Original file | https://www.mdpi.com/2077-1312/4/3/57/xml |
| article pdf uploaded. | 5 September 2016 10:37 CEST | Version of Record | https://www.mdpi.com/2077-1312/4/3/57/pdf |
