| article html file updated | 6 February 2020 15:56 CET | Update | https://www.mdpi.com/2077-0383/4/2/343 |
| article html file updated | 7 May 2019 01:01 CEST | Update | - |
| article html file updated | 25 March 2019 21:44 CET | Update | - |
| article html file updated | 21 August 2015 07:37 CEST | Update | - |
| article html file updated | 25 June 2015 12:09 CEST | Original file | - |
| article xml file uploaded | 25 June 2015 12:09 CEST | Original file | https://www.mdpi.com/2077-0383/4/2/343/xml |
| article pdf uploaded. | 12 February 2015 14:16 CET | Version of Record | https://www.mdpi.com/2077-0383/4/2/343/pdf |
