Nisar A. Shah, Farooq Ahmad Khanday. nth-order HP filter function to FLF topology. I. J. Circuit Theory and Applications, 37(10):1075-1091, 2009. [doi]
@article{ShahK09-2, title = {nth-order HP filter function to FLF topology}, author = {Nisar A. Shah and Farooq Ahmad Khanday}, year = {2009}, doi = {10.1002/cta.533}, url = {https://doi.org/10.1002/cta.533}, researchr = {https://researchr.org/publication/ShahK09-2}, cites = {0}, citedby = {0}, journal = {I. J. Circuit Theory and Applications}, volume = {37}, number = {10}, pages = {1075-1091}, }