| article html file updated | 6 February 2020 15:53 CET | Update | https://www.mdpi.com/2079-9276/4/1/25 |
| article html file updated | 7 May 2019 01:07 CEST | Update | - |
| article html file updated | 25 March 2019 21:39 CET | Update | - |
| article html file updated | 21 August 2015 07:26 CEST | Original file | - |
| article pdf uploaded. | 12 February 2015 09:22 CET | Updated version of record | https://www.mdpi.com/2079-9276/4/1/25/pdf |
| article pdf uploaded. | 11 February 2015 11:04 CET | Version of Record | https://www.mdpi.com/2079-9276/4/1/25/pdf-vor |
