| article html file updated | 7 February 2020 14:15 CET | Update | https://www.mdpi.com/2077-1312/4/3/52 |
| article html file updated | 5 May 2019 05:26 CEST | Update | - |
| article html file updated | 27 March 2019 15:37 CET | Update | - |
| article html file updated | 27 October 2017 11:03 CEST | Update | - |
| article html file updated | 1 September 2016 09:05 CEST | Original file | - |
| article xml uploaded. | 1 September 2016 09:02 CEST | Update | https://www.mdpi.com/2077-1312/4/3/52/xml |
| article xml uploaded. | 1 September 2016 09:02 CEST | Original file | - |
| article pdf uploaded. | 1 September 2016 09:02 CEST | Version of Record | https://www.mdpi.com/2077-1312/4/3/52/pdf |
