| article html file updated | 7 February 2020 09:41 CET | Update | https://www.mdpi.com/2075-5309/6/2/23 |
| article html file updated | 5 May 2019 13:51 CEST | Update | N/A |
| article html file updated | 27 March 2019 06:33 CET | Update | N/A |
| article html file updated | 1 July 2016 10:21 CEST | Update | N/A |
| article html file updated | 3 June 2016 09:19 CEST | Original file | N/A |
| article xml uploaded. | 3 June 2016 09:18 CEST | Original file | https://www.mdpi.com/2075-5309/6/2/23/xml |
| article pdf uploaded. | 3 June 2016 09:18 CEST | Version of Record | https://www.mdpi.com/2075-5309/6/2/23/pdf |
