| article html file updated | 6 February 2020 09:24 CET | Update | https://www.mdpi.com/1911-8074/7/2/67 |
| article html file updated | 7 May 2019 14:16 CEST | Update | - |
| article html file updated | 21 March 2019 17:23 CET | Update | - |
| article html file updated | 20 August 2015 07:47 CEST | Original file | - |
| article pdf uploaded. | 26 May 2014 08:59 CEST | Updated version of record | https://www.mdpi.com/1911-8074/7/2/67/pdf |
| article pdf uploaded. | 23 May 2014 09:40 CEST | Updated version of record | https://www.mdpi.com/1911-8074/7/2/67/pdf-vor |
| article pdf uploaded. | 23 May 2014 09:27 CEST | Updated version of record | https://www.mdpi.com/1911-8074/7/2/67/pdf-vor |
| article supplementary file uploaded. | 22 May 2014 13:39 CEST | - | https://www.mdpi.com/1911-8074/7/2/67#supplementary |
| article pdf uploaded. | 22 May 2014 13:39 CEST | Updated version of record | https://www.mdpi.com/1911-8074/7/2/67/pdf-vor |
| article pdf uploaded. | 21 May 2014 15:04 CEST | Updated version of record | https://www.mdpi.com/1911-8074/7/2/67/pdf-vor |
| article pdf uploaded. | 21 May 2014 14:53 CEST | Version of Record | https://www.mdpi.com/1911-8074/7/2/67/pdf-vor |
