@entry{sin-nar-09-aa,
  author = {JM Singh and PJ Narayanan},
  title = {Real-time ray tracing of implicit surfaces on the GPU},
  journal = {IEEE transactions on visualization ...,},
  volume = {},
  number = {},
  pages = {},
  year = 2009,
  month = ,
  doi = {},
  comment = {},
  abstract = {},
  url = {{\url{https://ieeexplore.ieee.org/abstract/document/4815235/?casa_token=T53FuLYeexsAAAAA:8TwStcShSwWGbcxWV-bvAeTD_66hWRu52RttQKWNp_VqpBIpemPLO1CpIE1ZQAT-Norf3b_m}}},
  quotes = {... algebraic surfaces up to order 4 using analytical roots on the GPU [5] and selected algebraic surfaces and some nonalgebraic surfaces using interval analysis and affine arithmetic on ...}
}