| article html file updated | 9 February 2020 14:34 CET | Update | https://www.mdpi.com/2076-3921/7/4/60 |
| article html file updated | 2 October 2019 19:18 CEST | Update | - |
| article html file updated | 1 May 2019 02:01 CEST | Update | - |
| article html file updated | 17 April 2019 02:34 CEST | Update | - |
| article html file updated | 29 March 2019 17:25 CET | Update | - |
| article html file updated | 1 May 2018 10:24 CEST | Update | - |
| article html file updated | 20 April 2018 05:48 CEST | Original file | - |
| article pdf uploaded. | 20 April 2018 05:47 CEST | Version of Record | https://www.mdpi.com/2076-3921/7/4/60/pdf |
| article xml uploaded. | 20 April 2018 05:47 CEST | Update | https://www.mdpi.com/2076-3921/7/4/60/xml |
| article xml file uploaded | 20 April 2018 05:47 CEST | Original file | - |
