His book , Euthanasia : The Case for the Good Death , was published in 1990 .
He was also an advocate of the legalisation of assisted suicide , and is a co-founder and former chair of the Voluntary Euthanasia Society .
advocate 's book , Euthanasia : The Case for the Good Death , was published in 1990 .
He was also an advocate of the legalisation of assisted suicide , and is a co-founder and former chair of the Voluntary Euthanasia Society .