| article html file updated | 7 February 2020 07:23 CET | Update | https://www.mdpi.com/1420-3049/21/4/502 |
| article html file updated | 21 September 2019 15:21 CEST | Update | - |
| article html file updated | 5 May 2019 18:24 CEST | Update | - |
| article html file updated | 27 March 2019 02:06 CET | Update | - |
| article html file updated | 17 September 2018 04:08 CEST | Update | - |
| article html file updated | 28 April 2016 11:59 CEST | Update | - |
| article html file updated | 16 April 2016 10:38 CEST | Original file | - |
| article xml uploaded. | 16 April 2016 10:37 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/502/xml |
| article pdf uploaded. | 16 April 2016 10:37 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/502/pdf |
