| article html file updated | 23 February 2021 07:33 CET | Update | https://www.mdpi.com/2079-3200/6/1/2 |
| article html file updated | 9 February 2020 01:44 CET | Update | N/A |
| article html file updated | 2 May 2019 04:58 CEST | Update | N/A |
| article html file updated | 18 April 2019 03:01 CEST | Update | N/A |
| article html file updated | 28 March 2019 12:29 CET | Update | N/A |
| article pdf uploaded. | 23 January 2018 04:08 CET | Updated version of record | https://www.mdpi.com/2079-3200/6/1/2/pdf |
| article html file updated | 2 January 2018 07:50 CET | Original file | N/A |
| article xml uploaded. | 2 January 2018 07:49 CET | Original file | https://www.mdpi.com/2079-3200/6/1/2/xml |
| article pdf uploaded. | 2 January 2018 07:49 CET | Version of Record | https://www.mdpi.com/2079-3200/6/1/2/pdf-vor |
