| article html file updated | 7 February 2020 07:54 CET | Update | https://www.mdpi.com/2075-5309/6/2/18 |
| article html file updated | 5 May 2019 17:21 CEST | Update | N/A |
| article html file updated | 27 March 2019 03:12 CET | Update | N/A |
| article html file updated | 1 July 2016 10:16 CEST | Update | N/A |
| article html file updated | 28 April 2016 09:00 CEST | Original file | N/A |
| article xml uploaded. | 28 April 2016 08:59 CEST | Original file | https://www.mdpi.com/2075-5309/6/2/18/xml |
| article pdf uploaded. | 28 April 2016 08:59 CEST | Version of Record | https://www.mdpi.com/2075-5309/6/2/18/pdf |
