| article html file updated | 8 February 2020 03:14 CET | Update | https://www.mdpi.com/2073-4360/9/4/136 |
| article html file updated | 24 September 2019 05:50 CEST | Update | - |
| article html file updated | 4 May 2019 02:53 CEST | Update | - |
| article html file updated | 18 March 2019 05:34 CET | Update | - |
| article html file updated | 28 April 2017 10:37 CEST | Update | - |
| article html file updated | 11 April 2017 12:29 CEST | Original file | - |
| article xml uploaded. | 11 April 2017 12:27 CEST | Update | https://www.mdpi.com/2073-4360/9/4/136/xml |
| article pdf uploaded. | 11 April 2017 12:27 CEST | Updated version of record | https://www.mdpi.com/2073-4360/9/4/136/pdf |
| article pdf uploaded. | 10 April 2017 15:58 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/4/136/pdf-vor |
