"Its 261-word text is now infamous. It is brief, at times laconic, and leaves many things unsaid or uncertain. So, what does - and doesn’t - Article 50 permit?"
EU-UK BREXIT: Extension and elections: We need to talk about Article 50 (EU Law Analysis, link):
“Its 261-word text is now infamous. It is brief, at times laconic, and leaves many things unsaid or uncertain. So, what does – and doesn’t – Article 50 permit?”