| article html file updated | 6 February 2020 07:59 CET | Update | https://www.mdpi.com/2227-7102/4/1/141 |
| article html file updated | 20 September 2019 06:38 CEST | Update | N/A |
| article html file updated | 7 May 2019 17:11 CEST | Update | N/A |
| article html file updated | 21 March 2019 14:03 CET | Update | N/A |
| article html file updated | 20 August 2015 00:10 CEST | Original file | N/A |
| article supplementary file uploaded. | 18 March 2014 11:35 CET | - | https://www.mdpi.com/2227-7102/4/1/141#supplementary |
| article pdf uploaded. | 18 March 2014 11:35 CET | Version of Record | https://www.mdpi.com/2227-7102/4/1/141/pdf |
