| article html file updated | 9 February 2020 07:17 CET | Update | https://www.mdpi.com/2227-7072/6/1/23 |
| article html file updated | 1 May 2019 17:04 CEST | Update | N/A |
| article html file updated | 17 April 2019 16:27 CEST | Update | N/A |
| article html file updated | 29 March 2019 00:41 CET | Update | N/A |
| article html file updated | 26 March 2018 15:44 CEST | Update | N/A |
| article html file updated | 24 February 2018 05:14 CET | Original file | N/A |
| article xml uploaded. | 24 February 2018 05:13 CET | Original file | https://www.mdpi.com/2227-7072/6/1/23/xml |
| article pdf uploaded. | 24 February 2018 05:13 CET | Updated version of record | https://www.mdpi.com/2227-7072/6/1/23/pdf |
| article pdf uploaded. | 22 February 2018 16:16 CET | Version of Record | https://www.mdpi.com/2227-7072/6/1/23/pdf-vor |
