| article html file updated | 6 February 2020 04:18 CET | Update | https://www.mdpi.com/2079-6412/3/3/166 |
| article html file updated | 8 May 2019 00:37 CEST | Update | N/A |
| article html file updated | 21 March 2019 04:22 CET | Update | N/A |
| article html file updated | 19 May 2016 09:36 CEST | Update | N/A |
| article html file updated | 17 June 2015 13:05 CEST | Original file | N/A |
| article pdf uploaded. | 11 September 2013 15:40 CEST | Updated version of record | https://www.mdpi.com/2079-6412/3/3/166/pdf |
| article pdf uploaded. | 10 September 2013 14:20 CEST | Version of Record | https://www.mdpi.com/2079-6412/3/3/166/pdf-vor |
