SEARCH Articles Figures Tables Connection of quasispin method with other group-theoretical methods Momentum quasispin Operators in quasispin space of separate shells Quantum number quasispin Quasispin and isospin for relativistic matrix elements Quasispin for a shell of equivalent electrons Quasispin for complex electronic configurations Relativistic approach and quasispin for one subshell Second-quantization in the Theory of an Atom. Quasispin and Isospin Selection rules quasispin Superposition of configurations in quasispin space Tensors in quasispin space Tensors in the space of total quasispin and their submatrix elements Transposition of spin and quasispin quantum numbers Wave functions in quasispin space