| article html file updated | 7 February 2020 06:24 CET | Update | https://www.mdpi.com/1420-3049/21/4/403 |
| article html file updated | 21 September 2019 13:55 CEST | Update | N/A |
| article html file updated | 5 May 2019 20:25 CEST | Update | N/A |
| article html file updated | 27 March 2019 00:20 CET | Update | N/A |
| article html file updated | 17 September 2018 03:37 CEST | Update | N/A |
| article html file updated | 28 April 2016 11:25 CEST | Update | N/A |
| article html file updated | 25 March 2016 10:07 CET | Original file | N/A |
| article xml uploaded. | 25 March 2016 10:06 CET | Original file | https://www.mdpi.com/1420-3049/21/4/403/xml |
| article pdf uploaded. | 25 March 2016 10:06 CET | Version of Record | https://www.mdpi.com/1420-3049/21/4/403/pdf |
