| article html file updated | 9 February 2020 00:26 CET | Update | https://www.mdpi.com/2077-1312/5/4/60 |
| article html file updated | 29 September 2019 07:20 CEST | Update | - |
| article html file updated | 2 May 2019 07:47 CEST | Update | - |
| article html file updated | 18 April 2019 05:37 CEST | Update | - |
| article html file updated | 2 January 2018 12:55 CET | Update | - |
| article html file updated | 18 December 2017 15:34 CET | Original file | - |
| article xml uploaded. | 18 December 2017 15:33 CET | Update | https://www.mdpi.com/2077-1312/5/4/60/xml |
| article xml uploaded. | 18 December 2017 15:33 CET | Original file | - |
| article pdf uploaded. | 18 December 2017 15:33 CET | Version of Record | https://www.mdpi.com/2077-1312/5/4/60/pdf |
