eft;  vertical-align: top; background: #fff3d9; padding: 2 2 2 5; "> .true.
         </td>
</tr>
<tr><td align="left" valign="top" colspan="2"><blockquote><pre style="margin-bottom: -1em;">
When set to .true. the pseudo-Hermitian Lanczos
algorithm is used. When set to .false. the
non-Hermitian Lanczos biorthogonalization algorithm
is used (which is two times slower).
         </pre></blockquote></td></tr>
</table>
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