| article html file updated | 6 February 2020 10:36 CET | Update | https://www.mdpi.com/2227-7382/2/3/341 |
| article html file updated | 7 May 2019 11:50 CEST | Update | - |
| article html file updated | 21 March 2019 20:34 CET | Update | - |
| article html file updated | 16 February 2017 07:00 CET | Update | - |
| article html file updated | 20 August 2015 12:21 CEST | Original file | - |
| article pdf uploaded. | 11 July 2014 16:36 CEST | Updated version of record | https://www.mdpi.com/2227-7382/2/3/341/pdf |
| article pdf uploaded. | 10 July 2014 09:29 CEST | Version of Record | https://www.mdpi.com/2227-7382/2/3/341/pdf-vor |
