| article html file updated | 6 February 2020 18:19 CET | Update | https://www.mdpi.com/2227-7072/3/2/136 |
| article html file updated | 6 May 2019 20:40 CEST | Update | - |
| article html file updated | 26 March 2019 01:57 CET | Update | - |
| article html file updated | 10 October 2015 06:31 CEST | Original file | - |
| article xml file uploaded | 10 October 2015 06:31 CEST | Original file | https://www.mdpi.com/2227-7072/3/2/136/xml |
| article pdf uploaded. | 5 May 2015 11:35 CEST | Version of Record | https://www.mdpi.com/2227-7072/3/2/136/pdf |
