| article html file updated | 7 February 2020 07:32 CET | Update | https://www.mdpi.com/1420-3049/21/4/460 |
| article html file updated | 21 September 2019 15:35 CEST | Update | N/A |
| article html file updated | 5 May 2019 18:04 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:27 CET | Update | N/A |
| article html file updated | 17 September 2018 03:55 CEST | Update | N/A |
| article html file updated | 28 April 2016 11:44 CEST | Update | N/A |
| article html file updated | 20 April 2016 14:39 CEST | Original file | N/A |
| article xml uploaded. | 20 April 2016 14:38 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/460/xml |
| article pdf uploaded. | 20 April 2016 14:38 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/460/pdf |
