*http://books.google.de/books?hl=de&lr=&id=LwkhiNg5fr8C&oi=fnd&pg=PA18&dq=quantec+%22m-tec%22&ots=rYsTTK3j2M&sig=Y_6rxvzKSwlhDWVPTgOwP4Ap3f8 | *http://books.google.de/books?hl=de&lr=&id=LwkhiNg5fr8C&oi=fnd&pg=PA18&dq=quantec+%22m-tec%22&ots=rYsTTK3j2M&sig=Y_6rxvzKSwlhDWVPTgOwP4Ap3f8 |