| article html file updated | 6 February 2020 02:56 CET | Update | https://www.mdpi.com/2073-4360/5/3/873 |
| article html file updated | 8 May 2019 03:23 CEST | Update | - |
| article html file updated | 21 March 2019 00:36 CET | Update | - |
| article html file updated | 17 June 2015 10:48 CEST | Original file | - |
| article pdf uploaded. | 3 July 2013 15:16 CEST | Updated version of record | https://www.mdpi.com/2073-4360/5/3/873/pdf |
| article pdf uploaded. | 2 July 2013 12:34 CEST | Version of Record | https://www.mdpi.com/2073-4360/5/3/873/pdf-vor |
