| article html file updated | 6 February 2020 19:31 CET | Update | https://www.mdpi.com/2077-0383/4/6/1269 |
| article html file updated | 6 May 2019 18:07 CEST | Update | N/A |
| article html file updated | 26 March 2019 04:27 CET | Update | N/A |
| article html file updated | 21 August 2015 13:22 CEST | Update | N/A |
| article html file updated | 2 July 2015 06:37 CEST | Original file | N/A |
| article xml file uploaded | 2 July 2015 06:37 CEST | Original file | https://www.mdpi.com/2077-0383/4/6/1269/xml |
| article pdf uploaded. | 9 June 2015 13:35 CEST | Version of Record | https://www.mdpi.com/2077-0383/4/6/1269/pdf |
