A model for productivity and soil fertility prediction oriented to ubiquitous agriculture. - Gilson Augusto Helfer; Jorge L. V. Barbosa; Adilson Ben da Costa; Bruno G. Martini; Ronaldo dos Santos (WebMedia, 2019)

A computational model for ubiquitous intelligent services in indoor agriculture. - Bruno G. Martini; Gilson Augusto Helfer; Jorge L. V. Barbosa; Marcio R. da Silva; Rodrigo Marques de Figueiredo; Regina C. E. Modolo; Adenauer C. Yamin (WebMedia, 2019)

A computational model for soil fertility prediction in ubiquitous agriculture. - Gilson Augusto Helfer; Jorge Luis Victória Barbosa; Ronaldo dos Santos; Adilson Ben da Costa (Comput. Electron. Agric., 2020)

Tellus-Onto: uma ontologia para classificação e inferência de solos na agricultura de precisão: Tellus-Onto: an ontology for soil classification and inference in precision agriculture. - Gilson Augusto Helfer; Adilson Ben da Costa; Rodrigo Simon Bavaresco; Jorge Luis Victória Barbosa (SBSI, 2021)

Multispectral Cameras and Machine Learning Integrated into Portable Devices as Clay Prediction Technology. - Gilson Augusto Helfer; Jorge Luis Victória Barbosa; Douglas Alves; Adilson Ben da Costa; Marko Beko; Valderi Reis Quietinho Leithardt (J. Sens. Actuator Networks, 2021)

IndoorPlant: A Model for Intelligent Services in Indoor Agriculture Based on Context Histories. - Bruno Guilherme Martini; Gilson Augusto Helfer; Jorge Luis Victória Barbosa; Regina Célia Espinosa Modolo; Marcio Rosa da Silva; Rodrigo Marques de Figueiredo; André Sales Mendes; Luis Augusto Silva; Valderi Reis Quietinho Leithardt (Sensors, 2021)

A Multi-Start Algorithm for Solving the Capacitated Vehicle Routing Problem with Two-Dimensional Loading Constraints. - Leandro Pinto Fava; João Carlos Furtado; Gilson Augusto Helfer; Jorge Luis Victória Barbosa; Marko Beko; Sérgio Duarte Correia; Valderi Reis Quietinho Leithardt (Symmetry, 2021)

Tellus: um modelo computacional para análise de solo na agricultura ubíqua baseado em históricos de contextos - Gilson Augusto Helfer (2022)

SoilBR-Onto: An Ontology for Soil Fertility Management and Classification in Brazil. - Gilson Augusto Helfer; Adilson Ben da Costa; Jorge Luis Victória Barbosa (Appl. Ontology, 2025)