| article html file updated | 7 February 2020 16:20 CET | Update | https://www.mdpi.com/2079-9292/5/4/68 |
| article html file updated | 22 September 2019 02:49 CEST | Update | - |
| article html file updated | 5 May 2019 01:42 CEST | Update | - |
| article html file updated | 29 December 2016 11:03 CET | Update | - |
| article html file updated | 14 October 2016 07:49 CEST | Original file | - |
| article xml uploaded. | 14 October 2016 07:47 CEST | Update | https://www.mdpi.com/2079-9292/5/4/68/xml |
| article xml uploaded. | 14 October 2016 07:47 CEST | Original file | - |
| article pdf uploaded. | 14 October 2016 07:47 CEST | Version of Record | https://www.mdpi.com/2079-9292/5/4/68/pdf |
