| article html file updated | 7 February 2020 09:47 CET | Update | https://www.mdpi.com/1420-3049/21/6/734 |
| article html file updated | 21 September 2019 18:31 CEST | Update | N/A |
| article html file updated | 5 May 2019 13:40 CEST | Update | N/A |
| article html file updated | 27 March 2019 06:46 CET | Update | N/A |
| article html file updated | 12 November 2018 04:19 CET | Update | N/A |
| article html file updated | 29 June 2016 11:57 CEST | Update | N/A |
| article html file updated | 4 June 2016 12:33 CEST | Original file | N/A |
| article xml uploaded. | 4 June 2016 12:32 CEST | Original file | https://www.mdpi.com/1420-3049/21/6/734/xml |
| article pdf uploaded. | 4 June 2016 12:32 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/6/734/pdf |
