TY  - BOOK
AU  - Hasse Helmut
TI  - On the class number of abelian number fields
SN  - 9783030015107 (hbk)
U1  - B27, Q9 
PY  - 2019///
CY  - Germany
PB  - Springer       
KW  -  First way of transformation
KW  -  Generalized class number formulas
KW  -  Plan of investigation
KW  -  Real cyclic biquadratic fields
KW  - Mathematics
N1  - index 365p
ER  -