| article html file updated | 8 February 2020 11:59 CET | Update | https://www.mdpi.com/2079-9276/6/3/34 |
| article html file updated | 3 May 2019 10:20 CEST | Update | - |
| article html file updated | 27 March 2019 17:38 CET | Update | - |
| article html file updated | 6 October 2017 05:12 CEST | Update | - |
| article html file updated | 25 July 2017 15:29 CEST | Original file | - |
| article xml uploaded. | 25 July 2017 15:28 CEST | Original file | https://www.mdpi.com/2079-9276/6/3/34/xml |
| article pdf uploaded. | 25 July 2017 15:28 CEST | Version of Record | https://www.mdpi.com/2079-9276/6/3/34/pdf |
