| article html file updated | 9 February 2020 12:24 CET | Update | https://www.mdpi.com/2220-9964/7/4/140 |
| article html file updated | 2 October 2019 06:07 CEST | Update | N/A |
| article html file updated | 1 May 2019 06:22 CEST | Update | N/A |
| article html file updated | 17 April 2019 06:26 CEST | Update | N/A |
| article html file updated | 29 March 2019 12:25 CET | Update | N/A |
| article html file updated | 1 May 2018 03:58 CEST | Update | N/A |
| article html file updated | 3 April 2018 18:06 CEST | Original file | N/A |
| article xml uploaded. | 3 April 2018 18:05 CEST | Update | https://www.mdpi.com/2220-9964/7/4/140/xml |
| article pdf uploaded. | 3 April 2018 18:05 CEST | Version of Record | https://www.mdpi.com/2220-9964/7/4/140/pdf |
