| article html file updated | 7 February 2020 07:17 CET | Update | https://www.mdpi.com/2075-4701/6/4/86 |
| article html file updated | 5 May 2019 18:36 CEST | Update | N/A |
| article html file updated | 27 March 2019 01:55 CET | Update | N/A |
| article html file updated | 28 April 2016 12:10 CEST | Update | N/A |
| article html file updated | 14 April 2016 13:13 CEST | Original file | N/A |
| article xml uploaded. | 14 April 2016 13:12 CEST | Original file | https://www.mdpi.com/2075-4701/6/4/86/xml |
| article pdf uploaded. | 14 April 2016 13:12 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/4/86/pdf |
