| article html file updated | 7 February 2020 06:46 CET | Update | https://www.mdpi.com/1420-3049/21/4/442 |
| article html file updated | 21 September 2019 14:26 CEST | Update | N/A |
| article html file updated | 5 May 2019 19:41 CEST | Update | N/A |
| article html file updated | 27 March 2019 00:56 CET | Update | N/A |
| article html file updated | 17 September 2018 03:49 CEST | Update | N/A |
| article html file updated | 28 April 2016 11:37 CEST | Update | N/A |
| article html file updated | 1 April 2016 13:11 CEST | Original file | N/A |
| article xml uploaded. | 1 April 2016 13:10 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/442/xml |
| article pdf uploaded. | 1 April 2016 13:10 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/442/pdf |
