| article html file updated | 6 February 2020 03:02 CET | Update | https://www.mdpi.com/2073-4360/5/3/954 |
| article html file updated | 19 September 2019 22:30 CEST | Update | N/A |
| article html file updated | 8 May 2019 03:11 CEST | Update | N/A |
| article html file updated | 21 March 2019 00:51 CET | Update | N/A |
| article html file updated | 17 June 2015 11:00 CEST | Original file | N/A |
| article pdf uploaded. | 5 July 2013 15:10 CEST | Version of Record | https://www.mdpi.com/2073-4360/5/3/954/pdf |
