| article html file updated | 7 February 2020 06:58 CET | Update | https://www.mdpi.com/1420-3049/21/4/457 |
| article html file updated | 21 September 2019 14:41 CEST | Update | - |
| article html file updated | 5 May 2019 19:18 CEST | Update | - |
| article html file updated | 27 March 2019 01:17 CET | Update | - |
| article html file updated | 17 September 2018 03:54 CEST | Update | - |
| article html file updated | 28 April 2016 11:43 CEST | Update | - |
| article html file updated | 7 April 2016 12:17 CEST | Original file | - |
| article xml uploaded. | 7 April 2016 12:16 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/457/xml |
| article pdf uploaded. | 7 April 2016 12:16 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/457/pdf |
