| article html file updated | 7 February 2020 07:51 CET | Update | https://www.mdpi.com/2075-163X/6/2/40 |
| article html file updated | 5 May 2019 17:26 CEST | Update | N/A |
| article html file updated | 27 March 2019 03:06 CET | Update | N/A |
| article html file updated | 4 July 2016 06:23 CEST | Update | N/A |
| article html file updated | 27 April 2016 14:51 CEST | Original file | N/A |
| article xml uploaded. | 27 April 2016 14:50 CEST | Update | https://www.mdpi.com/2075-163X/6/2/40/xml |
| article pdf uploaded. | 27 April 2016 14:50 CEST | Version of Record | https://www.mdpi.com/2075-163X/6/2/40/pdf |
