| article html file updated | 7 February 2020 11:01 CET | Update | https://www.mdpi.com/2073-4395/6/3/39 |
| article html file updated | 5 May 2019 11:23 CEST | Update | - |
| article html file updated | 27 March 2019 09:00 CET | Update | - |
| article html file updated | 27 September 2016 11:24 CEST | Update | - |
| article html file updated | 30 June 2016 11:53 CEST | Original file | - |
| article xml uploaded. | 30 June 2016 11:52 CEST | Original file | https://www.mdpi.com/2073-4395/6/3/39/xml |
| article pdf uploaded. | 30 June 2016 11:52 CEST | Version of Record | https://www.mdpi.com/2073-4395/6/3/39/pdf |
