Kulkarni RG. A simpler method to get only the true solutions of cubic and quartic equations using Tschirnhaus transformation. Ann. Univ. Paedagog. Crac. Stud. Math. [Internet]. 2022 Sep. 5 [cited 2024 May 7];21:51-6. Available from: https://studmath.uken.krakow.pl/article/view/9500