| article html file updated | 8 February 2020 02:58 CET | Update | https://www.mdpi.com/2073-4360/9/4/131 |
| article html file updated | 24 September 2019 04:20 CEST | Update | - |
| article html file updated | 4 May 2019 03:27 CEST | Update | - |
| article html file updated | 18 March 2019 05:33 CET | Update | - |
| article html file updated | 28 April 2017 10:36 CEST | Update | - |
| article html file updated | 10 April 2017 22:19 CEST | Original file | - |
| article xml uploaded. | 9 April 2017 03:08 CEST | Original file | https://www.mdpi.com/2073-4360/9/4/131/xml |
| article pdf uploaded. | 9 April 2017 03:08 CEST | Updated version of record | https://www.mdpi.com/2073-4360/9/4/131/pdf |
| article pdf uploaded. | 5 April 2017 12:56 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/4/131/pdf-vor |
