@article{JCGS.813, title={NORMAN, a QuickBasic programme for petrochemical re-calculation of whole-rock major-element analyses on IBM PC} author={Janou\v{s}ek, Vojt\v{e}ch}, journal={Journal of the Czech Geological Society}, volume={46}, number={1-2}, pages={9--14}, year=2001, publisher={Czech Geological Society} }