According to Professors James Crawford and Alan Boyle, who set out their opinions in the paper, Scotland would be treated as a new country, having to renegotiate its relationship with world bodies.
The Scottish Government issued a paper last week, which assuming a Yes vote occurred in autumn 2014, could see negotiations between Scottish ministers and the UK Government, EU and international organisations concluded by March 2016.
Today's publication does not include specific advice from the European Commission on the implications of Scottish independence in the EU.
More top news
A charity has warned of a "pressure cooker environment" in schools putting children's mental health and self-esteem in danger.
The twin brother of the police officer shot and blinded by gunman Raoul Moat says his family are still waiting for justice five years later.
The success of the No camp is mainly due to Tsipras convincing people a No vote will strengthen their hands in negotiations.