| article html file updated | 7 February 2020 07:41 CET | Update | https://www.mdpi.com/1420-3049/21/4/531 |
| article html file updated | 21 September 2019 15:47 CEST | Update | N/A |
| article html file updated | 5 May 2019 17:47 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:45 CET | Update | N/A |
| article html file updated | 17 September 2018 04:16 CEST | Update | N/A |
| article html file updated | 28 April 2016 12:03 CEST | Update | N/A |
| article html file updated | 22 April 2016 14:58 CEST | Original file | N/A |
| article xml uploaded. | 22 April 2016 14:56 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/531/xml |
| article pdf uploaded. | 22 April 2016 14:56 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/531/pdf |
