| article html file updated | 6 February 2020 17:04 CET | Update | https://www.mdpi.com/2077-0375/5/2/150 |
| article html file updated | 6 May 2019 22:58 CEST | Update | - |
| article html file updated | 25 March 2019 23:43 CET | Update | - |
| article html file updated | 8 September 2015 06:05 CEST | Update | - |
| article xml file uploaded | 8 September 2015 06:05 CEST | Update | https://www.mdpi.com/2077-0375/5/2/150/xml |
| article html file updated | 21 August 2015 09:31 CEST | Update | - |
| article html file updated | 9 July 2015 06:46 CEST | Original file | - |
| article xml file uploaded | 9 July 2015 06:46 CEST | Original file | - |
| article pdf uploaded. | 27 March 2015 11:25 CET | Version of Record | https://www.mdpi.com/2077-0375/5/2/150/pdf |
