| article html file updated | 6 February 2020 02:31 CET | Update | https://www.mdpi.com/1420-3049/18/6/6620 |
| article html file updated | 19 September 2019 21:33 CEST | Update | N/A |
| article html file updated | 8 May 2019 04:17 CEST | Update | N/A |
| article html file updated | 20 March 2019 23:31 CET | Update | N/A |
| article html file updated | 17 September 2018 05:50 CEST | Original file | N/A |
| article pdf uploaded. | 6 June 2013 12:06 CEST | Version of Record | https://www.mdpi.com/1420-3049/18/6/6620/pdf |
