| article html file updated | 6 February 2020 22:19 CET | Update | https://www.mdpi.com/2309-608X/1/2/211 |
| article html file updated | 21 September 2019 02:41 CEST | Update | - |
| article html file updated | 6 May 2019 12:20 CEST | Update | - |
| article html file updated | 26 March 2019 09:49 CET | Update | - |
| article html file updated | 11 December 2018 08:42 CET | Original file | - |
| article pdf uploaded. | 1 September 2015 04:26 CEST | Updated version of record | https://www.mdpi.com/2309-608X/1/2/211/pdf |
| article pdf uploaded. | 31 August 2015 15:52 CEST | Version of Record | https://www.mdpi.com/2309-608X/1/2/211/pdf-vor |
