| article html file updated | 7 February 2020 19:05 CET | Update | https://www.mdpi.com/2079-9284/3/4/41 |
| article html file updated | 4 May 2019 20:22 CEST | Update | N/A |
| article html file updated | 5 December 2016 08:27 CET | Original file | N/A |
| article xml uploaded. | 5 December 2016 08:26 CET | Original file | https://www.mdpi.com/2079-9284/3/4/41/xml |
| article pdf uploaded. | 5 December 2016 08:26 CET | Version of Record | https://www.mdpi.com/2079-9284/3/4/41/pdf |
