| article html file updated | 7 February 2020 13:39 CET | Update | https://www.mdpi.com/1999-4915/8/8/234 |
| article html file updated | 5 May 2019 06:33 CEST | Update | N/A |
| article html file updated | 27 March 2019 14:16 CET | Update | N/A |
| article html file updated | 25 August 2016 12:17 CEST | Update | N/A |
| article html file updated | 20 August 2016 11:06 CEST | Original file | N/A |
| article xml uploaded. | 20 August 2016 11:05 CEST | Original file | https://www.mdpi.com/1999-4915/8/8/234/xml |
| article pdf uploaded. | 20 August 2016 11:05 CEST | Version of Record | https://www.mdpi.com/1999-4915/8/8/234/pdf |
