Computer algebra takes on the vibrating-membrane problem. - Daniel Frenkel; Laura Golebiowski; Renato Portugal (Comput. Sci. Eng., 1999)

Genetic Algorithms and Quantum Computation - Gilson A. Giraldi; Renato Portugal; Ricardo N. Thess (CoRR, 2004)

Reversible Karatsuba's Algorithm. - Luis Antonio Brasil Kowada; Renato Portugal; Celina M. H. de Figueiredo (J. Univers. Comput. Sci., 2006)

The Invar tensor package. - José M. Martín-García; Renato Portugal; Leon R. U. Manssur (Comput. Phys. Commun., 2007)

The QWalk simulator of quantum walks. - Franklin L. Marquezino; Renato Portugal (Comput. Phys. Commun., 2008)

The Invar tensor package: Differential invariants of Riemann. - José M. Martín-García; David Yllanes; Renato Portugal (Comput. Phys. Commun., 2008)

Solutions to the Hidden Subgroup Problem on Some Metacyclic Groups. - Demerson N. Gonçalves; Renato Portugal; Carlos Magno Martins Cosme (TCQ, 2009)

Decoherence in Search Algorithms. - Gonzalo Abal; Raul Donangelo; Franklin L. Marquezino; Amanda C. Oliveira; Renato Portugal (CoRR, 2009)

Mixing Times in Quantum Walks on Two-Dimensional Grids. - Franklin L. Marquezino; Renato Portugal; Gonzalo Abal (CoRR, 2010)

Obtaining the Quantum Fourier Transform from the classical FFT with QR decomposition. - Franklin L. Marquezino; Renato Portugal; F. D. Sasse (J. Comput. Appl. Math., 2010)

Spatial search on a honeycomb network. - Gonzalo Abal; Raul Donangelo; Franklin L. Marquezino; Renato Portugal (Math. Struct. Comput. Sci., 2010)

Quantum search algorithms on hierarchical networks. - Franklin de Lima Marquezino; Renato Portugal; Stefan Boettcher (ITW, 2011)

Decoder for Nonbinary CWS Quantum Codes - Nolmar Melo; Douglas F. G. Santiago; Renato Portugal (CoRR, 2012)

Parallel modular exponentiation using load balancing without precomputation. - Pedro C. S. Lara; Fábio Borges; Renato Portugal; Nadia Nedjah (J. Comput. Syst. Sci., 2012)

Spatial quantum search in a triangular network. - Gonzalo Abal; Raul Donangelo; M. Forets; Renato Portugal (Math. Struct. Comput. Sci., 2012)

Non-Pauli observables for CWS codes. - Douglas F. G. Santiago; Renato Portugal; Nolmar Melo (Quantum Inf. Process., 2013)

A new hybrid classical-quantum algorithm for continuous global optimization problems. - Pedro C. S. Lara; Renato Portugal; Carlile Lavor (J. Glob. Optim., 2014)

Decoherence in quantum Markov chains. - Raqueline Azevedo Medeiros Santos; Renato Portugal; Marcelo Dutra Fragoso (Quantum Inf. Process., 2014)

An Efficient One-Bit Model for Differential Fault Analysis on Simon Family. - Juan del Carmen Grados Vasquez; Fábio Borges; Renato Portugal; Pedro C. S. Lara (FDTC, 2015)

Spatial search on grids with minimum memory. - Andris Ambainis; Renato Portugal; Nikolay Nahimov (Quantum Inf. Comput., 2015)

Quantum walks on a circle with optomechanical systems. - Jalil Khatibi Moqadam; Renato Portugal; Marcos César de Oliveira 002 (Quantum Inf. Process., 2015)

Moments of coinless quantum walks on lattices. - Raqueline Azevedo Medeiros Santos; Renato Portugal; Stefan Boettcher (Quantum Inf. Process., 2015)

Establishing the equivalence between Szegedy's and coined quantum walks using the staggered model. - Renato Portugal (Quantum Inf. Process., 2016)

The staggered quantum walk model. - Renato Portugal; Raqueline A. M. Santos; Tharso D. Fernandes; Demerson N. Gonçalves (Quantum Inf. Process., 2016)

Parallel algorithms for modular multi-exponentiation. - Fábio Borges; Pedro C. S. Lara; Renato Portugal (Appl. Math. Comput., 2017)

The tessellation problem of quantum walks. - Alexandre Santiago de Abreu; Luís Felipe I. Cunha; Tharso D. Fernandes; Celina M. H. de Figueiredo; Luis A. B. Kowada; Franklin L. Marquezino; Daniel Posner; Renato Portugal (CoRR, 2017)

Determining the Efficiency of Quantum Search Algorithms with the Renormalization Group. - Stefan Boettcher; Shanshan Li; Tharso D. Fernandes; Renato Portugal (CoRR, 2017)

Exact simulation of coined quantum walks with the continuous-time model. - Pascal Philipp; Renato Portugal (Quantum Inf. Process., 2017)

The Graph Tessellation Cover Number: Extremal Bounds, Efficient Algorithms and Hardness. - Alexandre Santiago de Abreu; Luís Felipe I. Cunha; Tharso D. Fernandes; Celina M. H. de Figueiredo; Luis A. B. Kowada; Franklin L. Marquezino; Daniel Posner; Renato Portugal (LATIN, 2018)

Quantum walks via quantum cellular automata. - Pedro C. S. Costa; Renato Portugal; Fernando de Melo (Quantum Inf. Process., 2018)

Partition-based discrete-time quantum walks. - Norio Konno; Renato Portugal; Iwao Sato; Etsuo Segawa (Quantum Inf. Process., 2018)

Element distinctness revisited. - Renato Portugal (Quantum Inf. Process., 2018)

The Tessellation Cover Number of Good Tessellable Graphs. - Alexandre Santiago de Abreu; Luís Felipe I. Cunha; Celina M. H. de Figueiredo; Luis A. B. Kowada; Franklin L. Marquezino; Renato Portugal; Daniel Posner (CoRR, 2019)

Discretization of continuous-time quantum walks via the staggered model with Hamiltonians. - Gabriel Coutinho; Renato Portugal (Nat. Comput., 2019)

A Primer on Quantum Computing - Franklin de Lima Marquezino; Renato Portugal; Carlile Lavor (Springer, 2019)

Discrete-Time Quantum Walks on Oriented Graphs. - Bruno Chagas; Renato Portugal (QSQW, 2020)

Total tessellation cover and quantum walk. - Alexandre Santiago de Abreu; Luís Felipe I. Cunha; Celina M. H. de Figueiredo; Franklin L. Marquezino; Daniel Posner; Renato Portugal (CoRR, 2020)

Implementation of quantum walks on IBM quantum computers. - Frank Acasiete; Flavia P. Agostini; Jalil Khatibi Moqadam; Renato Portugal (Quantum Inf. Process., 2020)

The graph tessellation cover number: Chromatic bounds, efficient algorithms and hardness. - Alexandre Santiago de Abreu; Luís Felipe I. Cunha; Celina M. H. de Figueiredo; Luis A. B. Kowada; Franklin L. Marquezino; Daniel Posner; Renato Portugal (Theor. Comput. Sci., 2020)

Quantum walk-based search algorithms with multiple marked vertices. - Gustavo Alves Bezerra; Pedro H. G. Lugão; Renato Portugal (CoRR, 2021)

Spatial Search on Johnson Graphs by Discrete-Time Quantum Walk. - Hajime Tanaka; Mohamed Sabri; Renato Portugal (CoRR, 2021)

Quantum Walk on the Generalized Birkhoff Polytope Graph. - Rafael Cação; Lucas R. C. T. Cortez; Ismael R. de Farias Jr.; Ernee Kozyreff; Jalil Khatibi Moqadam; Renato Portugal (Entropy, 2021)

A computational complexity comparative study of graph tessellation problems. - Alexandre Santiago de Abreu; Luís Felipe I. Cunha; Celina M. H. de Figueiredo; Luis A. B. Kowada; Franklin L. Marquezino; Renato Portugal; Daniel Posner (Theor. Comput. Sci., 2021)

Basic Quantum Algorithms. - Renato Portugal (CoRR, 2022)

Multimarked Spatial Search by Continuous-Time Quantum Walk. - Pedro H. G. Lugão; Renato Portugal; Mohamed Sabri; Hajime Tanaka (CoRR, 2022)

Total tessellation cover: Bounds, hardness, and applications. - Alexandre Santiago de Abreu; Luís Felipe I. Cunha; Celina M. H. de Figueiredo; Franklin L. Marquezino; Daniel Posner; Renato Portugal (Discret. Appl. Math., 2022)

A quantum approach to the discretizable molecular distance geometry problem. - Carlile Lavor; Franklin L. Marquezino; Andrês Oliveira; Renato Portugal (Quantum Inf. Process., 2022)

Spatial search on Johnson graphs by continuous-time quantum walk. - Hajime Tanaka; Mohamed Sabri; Renato Portugal (Quantum Inf. Process., 2022)

Hiperwalk: Simulation of Quantum Walks with Heterogeneous High-Performance Computing. - Paulo Motta; Gustavo Alves Bezerra; Anderson Fernandes P. Santos; Renato Portugal (QCE, 2023)

Quantum Counting by Quantum Walks. - Gustavo Alves Bezerra; Raqueline A. M. Santos; Renato Portugal (CoRR, 2023)

Walking on vertices and edges by continuous-time quantum walk. - Cauê F. Teixeira da Silva; Daniel Posner; Renato Portugal (Quantum Inf. Process., 2023)

Steane code analysis by randomized benchmarking. - Anderson de Souza Barbosa; Franklin de Lima Marquezino; Renato Portugal (RAIRO Oper. Res., 2023)

Regression and Classification with Single-Qubit Quantum Neural Networks. - Leandro C. Souza; Bruno C. Guingo; Gilson A. Giraldi; Renato Portugal (CoRR, 2024)

Quantum search by continuous-time quantum walk on t-designs. - Pedro H. G. Lugão; Renato Portugal (Quantum Inf. Process., 2024)

Single-Qudit Quantum Neural Networks for Multiclass Classification. - Leandro C. Souza; Renato Portugal (CoRR, 2025)

Quantum Search on Bipartite Multigraphs. - Gustavo Alves Bezerra; Andris Ambainis; Renato Portugal (CoRR, 2025)