1. Bene MC (2009) Biphenotypic, bilineal, ambiguous or mixed lineage: strange leukemia! Haematologica 94(7):891–893
2. Matutes E, Morilla R, Farahat N, Carbonell F, Swansbury J, Dyer M, Catovsky D (1997) Definition of acute biphenotypic leukemia. Haematologica 82(1):64–66
3. Weinberg OK, Arber DA (2010) Mixed-phenotype acute leukemia: historical overview and a new definition. Leukemia 24(11):1844–1851
4. Bene MC, Castoldi G, Knapp W et al (1995) Proposals for the immunological classification of acute leukemias. European Group for the Immunological Characterization of Leukemias (EGIL). Leukemia 9:1783–1786
5. Swerdlow SH, Campo E, Harris NL, Jaffe ES, Pileri SA, Thiele J (eds) (2017) WHO classification of tumours of haematopoietic and lymphoid tissues, revised 4th edn. IARC, Lyon, pp 180–187