| article html file updated | 6 February 2020 14:50 CET | Update | https://www.mdpi.com/2077-0383/4/1/66 |
| article html file updated | 7 May 2019 03:12 CEST | Update | - |
| article html file updated | 25 March 2019 19:53 CET | Update | - |
| article html file updated | 21 August 2015 04:58 CEST | Update | - |
| article html file updated | 25 June 2015 12:08 CEST | Original file | - |
| article xml file uploaded | 25 June 2015 12:08 CEST | Original file | https://www.mdpi.com/2077-0383/4/1/66/xml |
| article pdf uploaded. | 29 December 2014 14:42 CET | Version of Record | https://www.mdpi.com/2077-0383/4/1/66/pdf |
