| article html file updated | 6 February 2020 12:47 CET | Update | https://www.mdpi.com/2075-4698/4/4/532 |
| article html file updated | 20 September 2019 13:42 CEST | Update | N/A |
| article html file updated | 7 May 2019 07:12 CEST | Update | N/A |
| article html file updated | 22 March 2019 02:27 CET | Update | N/A |
| article html file updated | 20 August 2015 22:54 CEST | Original file | N/A |
| article pdf uploaded. | 13 October 2014 14:11 CEST | Version of Record | https://www.mdpi.com/2075-4698/4/4/532/pdf |
