BOOK FIRST PENAL LAWS
PART I
OF PUNISHMENTS AND GENERAL RULES FOR THEIR APPLICATION, OF THE WILL AND AGE OF
THE OFFENDER, OF ATTEMPTED OFFENCE, OF ACCOMPLICES AND OF RECIDIVISTS
Title I
OF PUNISHMENTS AND GENERAL RULES FOR THEIR APPLICATION
Sub-title II
GENERAL PROVISIONS RESPECTING THE INFLICTION AND EXECUTION OF PUNISHMENTS
17. In the case of concurrent offences and punishments, the following provisions shall apply:
(a) a person guilty of more than one crime liable to punishments restrictive of personal liberty, one of which is for life, shall be sentenced to this punishment with the addition of solitary confinement;
Joint sentence following multiple convictions - national proceedings
EDIT.