Poincare Polinomials of Hyperbolic Lie Algebras of Rank Three
  In view of a previous work, we explicitly give the Poincare polinomials of 19 Hyperbolic Lie algebras of rank 3. It is seen that every one of these polinomials is expressed as the ratio of Poincare polinomial of $B_3$ Lie algebra and a polinomial of finite degree. 
Meltem Gungormez