| article html file updated | 6 February 2020 03:43 CET | Update | https://www.mdpi.com/2220-9964/2/3/729 |
| article html file updated | 8 May 2019 01:53 CEST | Update | - |
| article html file updated | 21 March 2019 02:45 CET | Update | - |
| article html file updated | 17 June 2015 12:13 CEST | Original file | - |
| article supplementary file uploaded. | 29 August 2013 14:39 CEST | - | https://www.mdpi.com/2220-9964/2/3/729#supplementary |
| article pdf uploaded. | 13 August 2013 11:10 CEST | Updated version of record | https://www.mdpi.com/2220-9964/2/3/729/pdf |
| article pdf uploaded. | 9 August 2013 15:14 CEST | Version of Record | https://www.mdpi.com/2220-9964/2/3/729/pdf-vor |
