| article html file updated | 6 February 2020 23:03 CET | Update | https://www.mdpi.com/2077-0375/5/3/454 |
| article html file updated | 6 May 2019 10:49 CEST | Update | N/A |
| article html file updated | 26 March 2019 11:14 CET | Update | N/A |
| article html file updated | 28 September 2015 11:54 CEST | Original file | N/A |
| article xml file uploaded | 28 September 2015 11:54 CEST | Original file | https://www.mdpi.com/2077-0375/5/3/454/xml |
| article pdf uploaded. | 21 September 2015 15:00 CEST | Version of Record | https://www.mdpi.com/2077-0375/5/3/454/pdf |
