| article html file updated | 6 February 2020 22:55 CET | Update | https://www.mdpi.com/2079-9292/4/3/623 |
| article html file updated | 6 May 2019 11:06 CEST | Update | N/A |
| article html file updated | 26 March 2019 10:58 CET | Update | N/A |
| article html file updated | 15 October 2015 07:24 CEST | Original file | N/A |
| article xml file uploaded | 15 October 2015 07:24 CEST | Original file | https://www.mdpi.com/2079-9292/4/3/623/xml |
| article pdf uploaded. | 18 September 2015 06:53 CEST | Updated version of record | https://www.mdpi.com/2079-9292/4/3/623/pdf |
| article pdf uploaded. | 17 September 2015 14:42 CEST | Version of Record | https://www.mdpi.com/2079-9292/4/3/623/pdf-vor |
