BULGARIA – CRIMINAL CODE
GENERAL PART
Chapter Four - PUNISHMENT
Section II - Kinds of Punishments
Article 38a
(1) Imprisonment for life shall be compulsory isolation of a convict for the remaining portion of the convict's life at penitentiary institutions for serving punishment by deprivation of liberty.
(2) Life imprisonment shall be inflicted where the crime committed is extremely grave.
(3) Imprisonment for life may be substituted for deprivation of liberty for a term of thirty years, provided the convict has served no less than twenty years.
(4) Work days shall not be counted during the serving of punishment by Imprisonment for life.
(5) The served punishment by life imprisonment shall be recognised as deprivation of liberty.
Enforcement of sentences imposed
National procedures re enforcement of sentences imposed
National penalties - life imprisonment
Enforcement of sentence of imprisonment
Enforcement of national penalties - imprisonment
EDIT.