| article html file updated | 7 February 2020 11:14 CET | Update | https://www.mdpi.com/2075-163X/6/3/67 |
| article html file updated | 5 May 2019 10:58 CEST | Update | N/A |
| article html file updated | 27 March 2019 09:25 CET | Update | N/A |
| article html file updated | 28 September 2016 07:36 CEST | Update | N/A |
| article html file updated | 5 July 2016 10:56 CEST | Original file | N/A |
| article xml uploaded. | 5 July 2016 10:55 CEST | Original file | https://www.mdpi.com/2075-163X/6/3/67/xml |
| article pdf uploaded. | 5 July 2016 10:55 CEST | Version of Record | https://www.mdpi.com/2075-163X/6/3/67/pdf |
