| article html file updated | 6 February 2020 18:42 CET | Update | https://www.mdpi.com/2077-0383/4/5/970 |
| article html file updated | 20 September 2019 21:27 CEST | Update | N/A |
| article html file updated | 6 May 2019 19:53 CEST | Update | N/A |
| article html file updated | 26 March 2019 02:46 CET | Update | N/A |
| article html file updated | 21 August 2015 12:15 CEST | Update | N/A |
| article html file updated | 25 June 2015 12:09 CEST | Original file | N/A |
| article xml file uploaded | 25 June 2015 12:09 CEST | Original file | https://www.mdpi.com/2077-0383/4/5/970/xml |
| article pdf uploaded. | 18 May 2015 11:27 CEST | Version of Record | https://www.mdpi.com/2077-0383/4/5/970/pdf |
