Rutkowski, I. 2024. Methods for Evaluating New Product Designs in the Portfolio Management Process in the Pre‑Market Phases of Product Life Cycle. Acta Universitatis Lodziensis. Folia Oeconomica. 1, 366 (Jun. 2024), 84–103. DOI:https://doi.org/10.18778/0208-6018.366.04.