| article html file updated | 7 February 2020 02:41 CET | Update | https://www.mdpi.com/1999-4893/9/1/3 |
| article html file updated | 6 May 2019 04:02 CEST | Update | N/A |
| article html file updated | 26 March 2019 17:12 CET | Update | N/A |
| article html file updated | 28 March 2016 11:33 CEST | Original file | N/A |
| article pdf uploaded. | 28 December 2015 03:45 CET | Updated version of record | https://www.mdpi.com/1999-4893/9/1/3/pdf |
| article xml uploaded. | 28 December 2015 03:45 CET | Update | https://www.mdpi.com/1999-4893/9/1/3/xml |
| article pdf uploaded. | 24 December 2015 14:10 CET | Version of Record | https://www.mdpi.com/1999-4893/9/1/3/pdf-vor |
| article xml uploaded. | 24 December 2015 14:10 CET | Original file | N/A |
