| article html file updated | 9 February 2020 02:31 CET | Update | https://www.mdpi.com/2075-4698/8/1/4 |
| article html file updated | 29 September 2019 19:06 CEST | Update | N/A |
| article html file updated | 2 May 2019 03:22 CEST | Update | N/A |
| article html file updated | 18 April 2019 01:31 CEST | Update | N/A |
| article html file updated | 28 March 2019 14:19 CET | Update | N/A |
| article html file updated | 27 March 2018 15:06 CEST | Update | N/A |
| article html file updated | 10 January 2018 07:23 CET | Original file | N/A |
| article xml uploaded. | 10 January 2018 07:22 CET | Original file | https://www.mdpi.com/2075-4698/8/1/4/xml |
| article pdf uploaded. | 10 January 2018 07:22 CET | Version of Record | https://www.mdpi.com/2075-4698/8/1/4/pdf |
