Neuenfeldt Júnior, Alvaro Luiz, Sabine Ritter De Paris, and Edson Funke. 2014. “The Scientific Context of Product Portfolio Management at Manufacturing Firms”. Future Studies Research Journal: Trends and Strategies 6 (2):103-25. https://doi.org/10.24023/FutureJournal/2175-5825/2014.v6i2.168.