| article html file updated | 6 February 2020 07:28 CET | Update | https://www.mdpi.com/2079-9292/3/1/76 |
| article html file updated | 7 May 2019 18:13 CEST | Update | N/A |
| article html file updated | 21 March 2019 12:51 CET | Update | N/A |
| article html file updated | 19 August 2015 21:30 CEST | Original file | N/A |
| article pdf uploaded. | 24 February 2014 11:36 CET | Version of Record | https://www.mdpi.com/2079-9292/3/1/76/pdf |
