| article html file updated | 6 February 2020 05:34 CET | Update | https://www.mdpi.com/2078-1547/4/2/217 |
| article html file updated | 7 May 2019 22:04 CEST | Update | - |
| article html file updated | 21 March 2019 07:43 CET | Update | - |
| article html file updated | 19 August 2015 09:50 CEST | Original file | - |
| article supplementary file uploaded. | 19 November 2013 16:44 CET | - | https://www.mdpi.com/2078-1547/4/2/217#supplementary |
| article supplementary file uploaded. | 15 November 2013 14:47 CET | - | https://www.mdpi.com/2078-1547/4/2/217#supplementary |
| article pdf uploaded. | 15 November 2013 14:46 CET | Version of Record | https://www.mdpi.com/2078-1547/4/2/217/pdf |
