Search for: [Abstract = "The paper presents the algorithm and description of the meigval procedurewritten in FORTRAN 90 language which was designed for calculation of themaximum eigenvalue of transfer matrix for one\-dimensional S = 1\/2 Heisenbergmodel. The procedure is available at the Poznań Supercomputing and NetworkingCentre on a Cray J916 supercomputer in the numerical procedure library\/ l i b \/ m e s t a t . a ."]