| article html file updated | 6 February 2020 10:16 CET | Update | https://www.mdpi.com/2221-3759/2/3/158 |
| article html file updated | 7 May 2019 12:29 CEST | Update | N/A |
| article html file updated | 21 March 2019 19:42 CET | Update | N/A |
| article html file updated | 20 August 2015 11:03 CEST | Original file | N/A |
| article supplementary file uploaded. | 26 June 2014 13:21 CEST | - | https://www.mdpi.com/2221-3759/2/3/158#supplementary |
| article pdf uploaded. | 26 June 2014 13:20 CEST | Version of Record | https://www.mdpi.com/2221-3759/2/3/158/pdf |
