@article{JaentschiL64 ,year = "2019" ,journal = "Symmetry" ,title = "On a class of optimal fourth order multiple root solvers without using derivatives" ,author = "Sharma, Janak R. and Kumar, Sunil and Jäntschi, Lorentz" ,volume = "11" ,number = "12" ,pages = "1452" ,ISSN = "2073-8994" ,doi = "10.3390/sym11121452" ,url = "http://lori.academicdirect.org/pdfs/400/316.pdf" }