Geometric aspects of the Tomita-Takesaki theory II. Uffe Haagerup, Christian F. Skau (1981) Mathematica Scandinavica
Gleason measures and some inner products on the algebra of bounded operators on a Hilbert space Ryszard Jajte, Richard Loebl (1981) Studia Mathematica
Gleason theorem for signed measures with infinite values Anatolij Dvurečenskij (1985) Mathematica Slovaca