| article html file updated | 6 February 2020 08:19 CET | Update | https://www.mdpi.com/1420-3049/19/4/4021 |
| article html file updated | 20 September 2019 07:03 CEST | Update | N/A |
| article html file updated | 7 May 2019 16:28 CEST | Update | N/A |
| article html file updated | 21 March 2019 14:52 CET | Update | N/A |
| article html file updated | 12 September 2018 06:02 CEST | Update | N/A |
| article html file updated | 20 August 2015 02:00 CEST | Update | N/A |
| article html file updated | 23 May 2014 15:01 CEST | Original file | N/A |
| article xml file uploaded | 23 May 2014 15:01 CEST | Original file | https://www.mdpi.com/1420-3049/19/4/4021/xml |
| article pdf uploaded. | 2 April 2014 13:12 CEST | Version of Record | https://www.mdpi.com/1420-3049/19/4/4021/pdf |
