On invariant IF-state

MICHALÍKOVÁ, Alžbeta - RIEČAN, Beloslav. On invariant IF-state. In Soft Computing : A Fusion of Foundations, Methodologies and Applications. - Heidelberg : Springer-Verlag, 2018. ISSN 1432-7643, 2018, vol. 22, no. 5, pp. 5043-5049. Dostupné na: https://doi.org/10.1007/s00500-018-3278-7.