DIG: Mm Serviço de Custos e Estatísticas para o Processamento Distribuído de Consultas. - Nicolaas Ruberg; Gabriela Ruberg; Marta Mattoso (SBBD, 2002)

Digging Database Statistics and Costs Parameters for Distributed Query Processing. - Nicolaas Ruberg; Gabriela Ruberg; Marta Mattoso (OTM, 2003)

Towards Cost-based Optimization for Data-intensive Web Service Computations. - Nicolaas Ruberg; Gabriela Ruberg; Ioana Manolescu (SBBD, 2004)

Experiencing Data Grids. - Nicolaas Ruberg; Nelson Kotowski; Amanda S. de Mattos; Luciana Matos; Melissa Machado; Daniel de Oliveira 001; Rafael Monclar; Cláudio Ananias Ferraz; Talitta Sanchotene; Vanessa Braganholo (VECPAR, 2006)

Contrato360 2.0: A Document and Database-Driven Question-Answer System Using Large Language Models and Agents. - Antony Seabra; Claudio Cavalcante; João Nepomuceno; Lucas Lago; Nicolaas Ruberg; Sérgio Lifschitz (KDIR, 2024)

Contrato360: uma aplicação de perguntas e respostas usando modelos de linguagem, documentos e bancos de dados. - Antony Seabra de Medeiros; Claudio Cavalcante; João Nepomuceno; Lucas Lago; Nicolaas Ruberg; Sérgio Lifschitz (SBBD, 2024)

Dynamic Multi-Agent Orchestration and Retrieval for Multi-Source Question-Answer Systems using Large Language Models. - Antony Seabra; Claudio Cavalcante; João Nepomuceno; Lucas Lago; Nicolaas Ruberg; Sérgio Lifschitz (CoRR, 2024)

AI-Driven Semantic Data Quality Assessment and Scoring for Relational Databases. - Antony Seabra; Claudio Cavalcante; Nicolaas Ruberg; Sérgio Lifschitz (DEXA (1), 2025)