| article html file updated | 7 February 2020 03:49 CET | Update | https://www.mdpi.com/2311-5637/2/1/3 |
| article html file updated | 6 May 2019 01:50 CEST | Update | N/A |
| article html file updated | 26 March 2019 19:14 CET | Update | N/A |
| article html file updated | 9 October 2016 08:54 CEST | Original file | N/A |
| article pdf uploaded. | 25 January 2016 08:39 CET | Version of Record | https://www.mdpi.com/2311-5637/2/1/3/pdf |
| article xml uploaded. | 25 January 2016 08:39 CET | Original file | https://www.mdpi.com/2311-5637/2/1/3/xml |
