| article html file updated | 7 February 2020 12:21 CET | Update | https://www.mdpi.com/2218-1997/2/3/14 |
| article html file updated | 5 May 2019 08:58 CEST | Update | N/A |
| article html file updated | 27 March 2019 11:29 CET | Update | N/A |
| article html file updated | 11 October 2016 07:25 CEST | Update | N/A |
| article html file updated | 26 July 2016 13:35 CEST | Original file | N/A |
| article xml uploaded. | 26 July 2016 13:34 CEST | Original file | https://www.mdpi.com/2218-1997/2/3/14/xml |
| article pdf uploaded. | 26 July 2016 13:34 CEST | Version of Record | https://www.mdpi.com/2218-1997/2/3/14/pdf |
