| article html file updated | 6 February 2020 21:08 CET | Update | https://www.mdpi.com/2226-4310/2/3/482 |
| article html file updated | 6 May 2019 14:50 CEST | Update | N/A |
| article html file updated | 26 March 2019 07:31 CET | Update | N/A |
| article html file updated | 21 August 2015 15:16 CEST | Original file | N/A |
| article pdf uploaded. | 28 July 2015 10:58 CEST | Version of Record | https://www.mdpi.com/2226-4310/2/3/482/pdf |
