Success rates are not uniform, however. James Liebman, Professor of Law at Columbia Law School, stated in 1996 that his study found that when habeas corpus petitions in death penalty cases were traced from conviction to completion of the case that there was "a 40 percent success rate in all capital cases from 1978 to 1995." Similarly, a study by Ronald Tabek in a law review article puts the success rate in habeas corpus cases involving death row inmates even higher, finding that between "1976 and 1991, approximately 47% of the habeas petitions filed by death row inmates were granted." Most habeas corpus petitioners in death penalty cases are represented by attorneys, but most habeas corpus petitioners in non-death penalty cases represent themselves. This is because federal funds are not available to non-capital state habeas petitioners to pay for attorneys unless there is good cause, there being no federal right to counsel in such matters. However, in state capital cases, the federal government provides funding for the representation of all capital habeas petitioners.