| article html file updated | 6 February 2020 02:32 CET | Update | https://new.mdpi.com/2079-6374/3/2/201 |
| article html file updated | 8 May 2019 04:15 CEST | Update | - |
| article html file updated | 20 March 2019 23:34 CET | Update | - |
| article html file updated | 17 June 2015 10:05 CEST | Update | - |
| article html file updated | 26 August 2014 03:59 CEST | Original file | - |
| article xml file uploaded | 26 August 2014 03:59 CEST | Original file | https://new.mdpi.com/2079-6374/3/2/201/xml |
| article pdf uploaded. | 10 June 2013 16:19 CEST | Updated version of record | https://new.mdpi.com/2079-6374/3/2/201/pdf |
| article pdf uploaded. | 7 June 2013 14:42 CEST | Updated version of record | https://new.mdpi.com/2079-6374/3/2/201/pdf-vor |
| article pdf uploaded. | 7 June 2013 09:40 CEST | Version of Record | https://new.mdpi.com/2079-6374/3/2/201/pdf-vor |
