| article html file updated | 7 February 2020 14:38 CET | Update | https://www.mdpi.com/2079-9721/4/3/29 |
| article html file updated | 5 May 2019 04:44 CEST | Update | N/A |
| article html file updated | 8 September 2016 11:20 CEST | Original file | N/A |
| article xml uploaded. | 8 September 2016 11:19 CEST | Original file | https://www.mdpi.com/2079-9721/4/3/29/xml |
| article pdf uploaded. | 8 September 2016 11:19 CEST | Version of Record | https://www.mdpi.com/2079-9721/4/3/29/pdf |
