@misc{Zdunek,
    author = {Zdunek, Rafał},
    title = {Lecture notes in {Numerical Algorithms}},
    year = {2021}
}

@Book{GoluVanl96,
  Title                    = {Matrix Computations},
  Author                   = {Golub, Gene H. and Van Loan, Charles F.},
  Publisher                = {The Johns Hopkins University Press},
  Year                     = {1996},
  Edition                  = {Third}
}