| article html file updated | 6 February 2020 02:21 CET | Update | https://www.mdpi.com/1999-4893/6/2/371 |
| article html file updated | 8 May 2019 04:39 CEST | Update | - |
| article html file updated | 20 March 2019 23:05 CET | Update | - |
| article html file updated | 20 July 2017 02:50 CEST | Update | - |
| article html file updated | 20 July 2017 02:49 CEST | Update | - |
| article html file updated | 20 July 2017 02:48 CEST | Original file | - |
| article xml uploaded. | 20 July 2017 02:47 CEST | Original file | https://www.mdpi.com/1999-4893/6/2/371/xml |
| article pdf uploaded. | 29 May 2013 16:19 CEST | Updated version of record | https://www.mdpi.com/1999-4893/6/2/371/pdf |
| article pdf uploaded. | 28 May 2013 11:51 CEST | Version of Record | https://www.mdpi.com/1999-4893/6/2/371/pdf-vor |
