| article html file updated | 6 February 2020 11:27 CET | Update | https://www.mdpi.com/2075-4701/4/3/401 |
| article html file updated | 7 May 2019 09:45 CEST | Update | N/A |
| article html file updated | 21 March 2019 23:04 CET | Update | N/A |
| article html file updated | 20 August 2015 15:25 CEST | Original file | N/A |
| article pdf uploaded. | 1 September 2014 12:01 CEST | Updated version of record | https://www.mdpi.com/2075-4701/4/3/401/pdf |
| article pdf uploaded. | 18 August 2014 16:06 CEST | Updated version of record | https://www.mdpi.com/2075-4701/4/3/401/pdf-vor |
| article pdf uploaded. | 14 August 2014 10:30 CEST | Version of Record | https://www.mdpi.com/2075-4701/4/3/401/pdf-vor |
