I guarantee the absence of malware &c. as of today, the Dienstag, 21. Februar 2012.
The solutions I provide base on tasks others have written and publicly provided to the students.
Where possible a link to the original source shall be provided.
I do not and can not guarantee the appropriety of information on the linked pages with passage of time. I can guarantee it at the time this page has been made as I have checked the pages before linking to them!
Any suggestions, complaints and requests can be made to me, Anton Lebedev, by sending them to my EMail adress at the university of Tuebingen. It is trivial to derive and thus shall be ommitted here.