| article html file updated | 6 February 2020 14:22 CET | Update | https://www.mdpi.com/2304-6740/2/4/660 |
| article html file updated | 7 May 2019 04:10 CEST | Update | N/A |
| article html file updated | 25 March 2019 19:04 CET | Update | N/A |
| article html file updated | 21 August 2015 03:53 CEST | Original file | N/A |
| article supplementary file uploaded. | 10 December 2014 14:31 CET | - | https://www.mdpi.com/2304-6740/2/4/660#supplementary |
| article pdf uploaded. | 10 December 2014 14:31 CET | Version of Record | https://www.mdpi.com/2304-6740/2/4/660/pdf |
