| article html file updated | 7 February 2020 18:54 CET | Update | https://www.mdpi.com/1999-4907/7/12/303 |
| article html file updated | 4 May 2019 20:43 CEST | Update | N/A |
| article html file updated | 27 December 2016 11:41 CET | Update | N/A |
| article html file updated | 2 December 2016 00:27 CET | Original file | N/A |
| article xml uploaded. | 1 December 2016 08:46 CET | Update | https://www.mdpi.com/1999-4907/7/12/303/xml |
| article xml uploaded. | 1 December 2016 08:46 CET | Original file | N/A |
| article pdf uploaded. | 1 December 2016 08:46 CET | Version of Record | https://www.mdpi.com/1999-4907/7/12/303/pdf |
