| article html file updated | 7 February 2020 07:17 CET | Update | https://www.mdpi.com/2079-9721/4/2/17 |
| article html file updated | 5 May 2019 18:35 CEST | Update | - |
| article html file updated | 27 March 2019 01:56 CET | Update | - |
| article html file updated | 14 April 2016 13:53 CEST | Original file | - |
| article xml uploaded. | 14 April 2016 13:52 CEST | Original file | https://www.mdpi.com/2079-9721/4/2/17/xml |
| article pdf uploaded. | 14 April 2016 13:52 CEST | Version of Record | https://www.mdpi.com/2079-9721/4/2/17/pdf |
