| article html file updated | 9 February 2020 05:33 CET | Update | https://www.mdpi.com/2075-4698/8/1/9 |
| article html file updated | 30 September 2019 12:52 CEST | Update | N/A |
| article html file updated | 1 May 2019 20:54 CEST | Update | N/A |
| article html file updated | 17 April 2019 19:52 CEST | Update | N/A |
| article html file updated | 28 March 2019 20:59 CET | Update | N/A |
| article html file updated | 27 March 2018 15:07 CEST | Update | N/A |
| article html file updated | 7 February 2018 07:26 CET | Original file | N/A |
| article xml uploaded. | 7 February 2018 07:25 CET | Original file | https://www.mdpi.com/2075-4698/8/1/9/xml |
| article pdf uploaded. | 7 February 2018 07:25 CET | Updated version of record | https://www.mdpi.com/2075-4698/8/1/9/pdf |
| article pdf uploaded. | 5 February 2018 12:41 CET | Version of Record | https://www.mdpi.com/2075-4698/8/1/9/pdf-vor |
