Formmängel und ihre Sanktionen: eine privatrechtsvergleichende Untersuchung - Helmut Heiss - Google Books

https://books.google.de/books?id=rfQbL8sXWxkC&pg=PA56&dq=formfreiheit&hl=de&sa=X&redir_esc=y#v=onepage&q=formfreiheit&f=false

English summary: Section 125 of the BGB (German Civil Code) declares contracts that lack legally required formalities to be void. In this work, the author shows that voidness is neither required by the very nature of formal rules nor is it necessary in…