| article html file updated | 6 February 2020 05:24 CET | Update | https://www.mdpi.com/2227-9091/1/3/101 |
| article html file updated | 7 May 2019 22:24 CEST | Update | - |
| article html file updated | 21 March 2019 07:17 CET | Original file | - |
| article pdf uploaded. | 8 November 2013 18:07 CET | Updated version of record | https://www.mdpi.com/2227-9091/1/3/101/pdf |
| article pdf uploaded. | 7 November 2013 15:26 CET | Version of Record | https://www.mdpi.com/2227-9091/1/3/101/pdf-vor |
