| article html file updated | 6 February 2020 05:12 CET | Update | https://www.mdpi.com/2079-9268/3/4/337 |
| article html file updated | 7 May 2019 22:44 CEST | Update | N/A |
| article html file updated | 21 March 2019 06:48 CET | Update | N/A |
| article html file updated | 24 July 2017 04:48 CEST | Update | N/A |
| article html file updated | 24 July 2017 04:47 CEST | Update | N/A |
| article html file updated | 24 July 2017 04:46 CEST | Original file | N/A |
| article xml uploaded. | 24 July 2017 04:44 CEST | Update | https://www.mdpi.com/2079-9268/3/4/337/xml |
| article pdf uploaded. | 29 October 2013 12:02 CET | Version of Record | https://www.mdpi.com/2079-9268/3/4/337/pdf |
