| article html file updated | 7 February 2020 06:41 CET | Update | https://www.mdpi.com/1420-3049/21/4/437 |
| article html file updated | 21 September 2019 14:19 CEST | Update | - |
| article html file updated | 5 May 2019 19:51 CEST | Update | - |
| article html file updated | 27 March 2019 00:48 CET | Update | - |
| article html file updated | 17 September 2018 03:48 CEST | Update | - |
| article html file updated | 28 April 2016 11:36 CEST | Update | - |
| article html file updated | 31 March 2016 13:06 CEST | Original file | - |
| article xml uploaded. | 31 March 2016 13:05 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/437/xml |
| article pdf uploaded. | 31 March 2016 13:05 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/437/pdf |
