| article html file updated | 9 February 2020 14:46 CET | Update | https://www.mdpi.com/2220-9964/7/4/157 |
| article html file updated | 2 October 2019 20:24 CEST | Update | - |
| article html file updated | 1 May 2019 01:38 CEST | Update | - |
| article html file updated | 17 April 2019 02:13 CEST | Update | - |
| article html file updated | 29 March 2019 17:53 CET | Update | - |
| article html file updated | 1 May 2018 04:03 CEST | Update | - |
| article html file updated | 23 April 2018 10:49 CEST | Update | - |
| article xml uploaded. | 23 April 2018 10:47 CEST | Update | https://www.mdpi.com/2220-9964/7/4/157/xml |
| article pdf uploaded. | 23 April 2018 10:47 CEST | Updated version of record | https://www.mdpi.com/2220-9964/7/4/157/pdf |
| article html file updated | 21 April 2018 10:58 CEST | Original file | - |
| article pdf uploaded. | 21 April 2018 10:57 CEST | Version of Record | https://www.mdpi.com/2220-9964/7/4/157/pdf-vor |
| article xml file uploaded | 21 April 2018 10:57 CEST | Original file | - |
