| article html file updated | 7 February 2020 08:48 CET | Update | https://www.mdpi.com/2076-3425/6/2/15 |
| article html file updated | 5 May 2019 15:38 CEST | Update | N/A |
| article html file updated | 27 March 2019 04:52 CET | Update | N/A |
| article html file updated | 4 July 2016 06:20 CEST | Update | N/A |
| article html file updated | 17 May 2016 09:41 CEST | Original file | N/A |
| article xml uploaded. | 17 May 2016 09:39 CEST | Original file | https://www.mdpi.com/2076-3425/6/2/15/xml |
| article pdf uploaded. | 17 May 2016 09:39 CEST | Version of Record | https://www.mdpi.com/2076-3425/6/2/15/pdf |
