| article html file updated | 8 February 2020 03:26 CET | Update | https://www.mdpi.com/2073-4360/9/4/138 |
| article html file updated | 24 September 2019 06:51 CEST | Update | - |
| article html file updated | 4 May 2019 02:30 CEST | Update | - |
| article html file updated | 18 March 2019 05:35 CET | Update | - |
| article html file updated | 28 April 2017 10:38 CEST | Update | - |
| article html file updated | 13 April 2017 12:11 CEST | Original file | - |
| article xml uploaded. | 13 April 2017 12:10 CEST | Update | https://www.mdpi.com/2073-4360/9/4/138/xml |
| article pdf uploaded. | 13 April 2017 12:10 CEST | Updated version of record | https://www.mdpi.com/2073-4360/9/4/138/pdf |
| article pdf uploaded. | 12 April 2017 13:04 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/4/138/pdf-vor |
