| article html file updated | 7 February 2020 08:18 CET | Update | https://www.mdpi.com/2218-2004/4/2/13 |
| article html file updated | 5 May 2019 16:34 CEST | Update | N/A |
| article html file updated | 27 March 2019 03:58 CET | Update | N/A |
| article html file updated | 1 July 2016 10:02 CEST | Update | N/A |
| article html file updated | 6 May 2016 11:50 CEST | Original file | N/A |
| article xml uploaded. | 6 May 2016 11:48 CEST | Original file | https://www.mdpi.com/2218-2004/4/2/13/xml |
| article pdf uploaded. | 6 May 2016 11:48 CEST | Version of Record | https://www.mdpi.com/2218-2004/4/2/13/pdf |
