| article html file updated | 8 February 2020 13:54 CET | Update | https://www.mdpi.com/2079-9276/6/3/39 |
| article html file updated | 26 September 2019 15:12 CEST | Update | - |
| article html file updated | 3 May 2019 06:14 CEST | Update | - |
| article html file updated | 27 March 2019 21:35 CET | Update | - |
| article html file updated | 6 October 2017 05:10 CEST | Update | - |
| article html file updated | 18 August 2017 15:23 CEST | Original file | - |
| article xml uploaded. | 18 August 2017 15:21 CEST | Original file | https://www.mdpi.com/2079-9276/6/3/39/xml |
| article pdf uploaded. | 18 August 2017 15:21 CEST | Version of Record | https://www.mdpi.com/2079-9276/6/3/39/pdf |
