| article html file updated | 9 February 2020 12:52 CET | Update | https://www.mdpi.com/2220-9964/7/4/144 |
| article html file updated | 2 October 2019 09:01 CEST | Update | N/A |
| article html file updated | 1 May 2019 05:22 CEST | Update | N/A |
| article html file updated | 17 April 2019 05:33 CEST | Update | N/A |
| article html file updated | 29 March 2019 13:30 CET | Update | N/A |
| article html file updated | 1 May 2018 03:59 CEST | Update | N/A |
| article html file updated | 12 April 2018 04:45 CEST | Original file | N/A |
| article xml uploaded. | 12 April 2018 04:44 CEST | Update | https://www.mdpi.com/2220-9964/7/4/144/xml |
| article pdf uploaded. | 12 April 2018 04:44 CEST | Updated version of record | https://www.mdpi.com/2220-9964/7/4/144/pdf |
| article pdf uploaded. | 7 April 2018 13:16 CEST | Version of Record | https://www.mdpi.com/2220-9964/7/4/144/pdf-vor |