| article html file updated | 7 February 2020 22:08 CET | Update | https://www.mdpi.com/2072-666X/8/2/31 |
| article html file updated | 23 September 2019 01:01 CEST | Update | - |
| article html file updated | 4 May 2019 13:47 CEST | Update | - |
| article html file updated | 15 October 2018 05:18 CEST | Update | - |
| article html file updated | 1 March 2017 07:49 CET | Update | - |
| article html file updated | 24 January 2017 10:21 CET | Original file | - |
| article xml uploaded. | 24 January 2017 10:19 CET | Update | https://www.mdpi.com/2072-666X/8/2/31/xml |
| article xml uploaded. | 24 January 2017 10:19 CET | Original file | - |
| article pdf uploaded. | 24 January 2017 10:19 CET | Version of Record | https://www.mdpi.com/2072-666X/8/2/31/pdf |
