@misc{Roy_Kushal_Some,
 author={Roy, Kushal and Panja, Sayantan and Saha, Mantu and Mitrovic, Zoran D.},
 howpublished={online},
 publisher={Wydawnictwo Uniwersytetu Śląskiego},
 language={eng},
 title={Some fixed point theorems via combination of weak contractionand Caristi contractive mapping},
 type={czasopismo},
 keywords={matematyka},
}