| article html file updated | 7 February 2020 19:12 CET | Update | https://www.mdpi.com/2079-9276/5/4/44 |
| article html file updated | 22 September 2019 09:15 CEST | Update | - |
| article html file updated | 4 May 2019 20:07 CEST | Update | - |
| article html file updated | 30 December 2016 09:15 CET | Update | - |
| article html file updated | 7 December 2016 10:11 CET | Original file | - |
| article xml uploaded. | 7 December 2016 10:09 CET | Update | https://www.mdpi.com/2079-9276/5/4/44/xml |
| article xml uploaded. | 7 December 2016 10:09 CET | Original file | - |
| article pdf uploaded. | 7 December 2016 10:09 CET | Version of Record | https://www.mdpi.com/2079-9276/5/4/44/pdf |
