HP, S. . , Jr., Kossakowski, J. ., Schwartz, T. ., Beeber, L. ., & Fried, E. . Longitudinal network structure of depression symptoms and self-efficacy in low-income mothers. PloS One, 13(1), e0191675. https://doi.org/10.1371/journal.pone.0191675 (Original work published 2018)