| article html file updated | 6 February 2020 14:17 CET | Update | https://www.mdpi.com/2304-6740/2/4/652 |
| article html file updated | 7 May 2019 04:19 CEST | Update | N/A |
| article html file updated | 25 March 2019 18:56 CET | Update | N/A |
| article html file updated | 21 August 2015 03:44 CEST | Original file | N/A |
| article supplementary file uploaded. | 8 December 2014 16:48 CET | - | https://www.mdpi.com/2304-6740/2/4/652#supplementary |
| article pdf uploaded. | 8 December 2014 16:48 CET | Version of Record | https://www.mdpi.com/2304-6740/2/4/652/pdf |
