| article html file updated | 7 February 2020 06:46 CET | Update | https://www.mdpi.com/2075-163X/6/2/33 |
| article html file updated | 5 May 2019 19:41 CEST | Update | N/A |
| article html file updated | 27 March 2019 00:56 CET | Update | N/A |
| article html file updated | 4 July 2016 06:21 CEST | Update | N/A |
| article html file updated | 1 April 2016 13:09 CEST | Original file | N/A |
| article xml uploaded. | 1 April 2016 13:08 CEST | Original file | https://www.mdpi.com/2075-163X/6/2/33/xml |
| article pdf uploaded. | 1 April 2016 13:08 CEST | Version of Record | https://www.mdpi.com/2075-163X/6/2/33/pdf |
