Case study #1 Rubens, from Brussels (Belgium), concludes a verbal contract with Schneider, from Emden (Germany), at an auction in Frankfurt (Germany). The contract concerns the sale and delivery of a painting by Rubens to Schneider. Both parties decide that Belgian law should be applicable to their contract. According to German law, the contract is valid only if it is in writing. Under Belgian law, it can be made verbally. According to Art. 11, 1 Rome I is the contract formally valid? Case study #2 Guiterrez, a student from Spain living in Amsterdam (The Netherlands), applies for a post with Mueller GmbH, a shipping company established in Hamburg (Germany). She is hired by Mueller's Rotterdam (The Netherlands) office to assist on Rhine cruises organised by the company. The ship travels from The Netherlands, through Germany to Switzerland, and back. Two months later, Guiterrez has not been paid anything approaching the salary they had agreed on. Which law does apply to this employment contract - Spain, Germany or Dutch