TY - JOUR TI - Quasitilted extensions of algebras I PY - 2001 AU - Coelho, Flávio Ulhoa AU - Martins, Maria Izabel Ramalho AU - De La Pena, José Antonio T2 - Proceedings of the American Mathematical Society SN - 1088-6826 UR - https://www.jstor.org/stable/2668735 PP - Providence VL - 129 IS - 5 SP - 1289-1297 ER -