| article html file updated | 7 February 2020 04:54 CET | Update | https://www.mdpi.com/2075-4698/6/1/6 |
| article html file updated | 21 September 2019 11:49 CEST | Update | N/A |
| article html file updated | 5 May 2019 23:33 CEST | Update | N/A |
| article html file updated | 26 March 2019 21:27 CET | Update | N/A |
| article html file updated | 19 April 2016 12:19 CEST | Original file | N/A |
| article pdf uploaded. | 23 February 2016 11:00 CET | Version of Record | https://www.mdpi.com/2075-4698/6/1/6/pdf |
| article xml uploaded. | 23 February 2016 11:00 CET | Original file | https://www.mdpi.com/2075-4698/6/1/6/xml |
