| article html file updated | 6 February 2020 02:35 CET | Update | https://www.mdpi.com/2075-4698/3/2/243 |
| article html file updated | 19 September 2019 21:41 CEST | Update | N/A |
| article html file updated | 8 May 2019 04:08 CEST | Update | N/A |
| article html file updated | 20 March 2019 23:42 CET | Update | N/A |
| article html file updated | 17 June 2015 10:10 CEST | Original file | N/A |
| article pdf uploaded. | 17 June 2013 16:38 CEST | Updated version of record | https://www.mdpi.com/2075-4698/3/2/243/pdf |
| article pdf uploaded. | 10 June 2013 15:40 CEST | Version of Record | https://www.mdpi.com/2075-4698/3/2/243/pdf-vor |
