| article html file updated | 7 February 2020 07:09 CET | Update | https://www.mdpi.com/1420-3049/21/4/481 |
| article html file updated | 21 September 2019 15:00 CEST | Update | N/A |
| article html file updated | 5 May 2019 18:51 CEST | Update | N/A |
| article html file updated | 27 March 2019 01:41 CET | Update | N/A |
| article html file updated | 17 September 2018 04:01 CEST | Update | N/A |
| article html file updated | 28 April 2016 11:51 CEST | Update | N/A |
| article html file updated | 12 April 2016 12:18 CEST | Original file | N/A |
| article xml uploaded. | 12 April 2016 12:17 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/481/xml |
| article pdf uploaded. | 12 April 2016 12:17 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/481/pdf |
