| article html file updated | 7 February 2020 06:54 CET | Update | https://www.mdpi.com/1420-3049/21/4/438 |
| article html file updated | 21 September 2019 14:36 CEST | Update | - |
| article html file updated | 5 May 2019 19:26 CEST | Update | - |
| article html file updated | 27 March 2019 01:10 CET | Update | - |
| article html file updated | 17 September 2018 03:48 CEST | Update | - |
| article html file updated | 28 April 2016 11:37 CEST | Update | - |
| article html file updated | 6 April 2016 14:08 CEST | Original file | - |
| article xml uploaded. | 6 April 2016 14:06 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/438/xml |
| article pdf uploaded. | 6 April 2016 14:06 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/438/pdf |
