Köhler, Hanjo (contributor) - 2007
years of loving atmosphere, patience and support.
To Michela and Sarah,
for everything that makes life meaningful.
To Don …,
for pushing my intellectual development and curiosity.
i
Acknowledgements
I am very grateful for having had the …. Further-
more, this is the place to thank all the teachers on my long path of intelectual
development.
I am very appreciative …