@article{JaentschiL58 ,year = "2020" ,journal = "Mathematics" ,title = "On derivative free multiple-root finders with optimal fourth order convergence" ,author = "Sharma, Janak R. and Kumar, Sunil and Jäntschi, Lorentz" ,volume = "8" ,number = "7" ,pages = "1091" ,ISSN = "2227-7390" ,doi = "10.3390/math8071091" ,url = "http://lori.academicdirect.org/pdfs/400/322.pdf" }