The NRC is detailed in the Three Steps to Resilience Manual found at NRFCare.com. There is also an academic text called Infant/Child Mental Health, Early Intervention, and Relationship-based Therapies: A Neurorelational Framework For Interdisciplinary Practice by Connie Lillas and Janiece Turnbull. This text is included in the Daniel Siegel-founded Norton Series on Interpersonal Neurobiology found here.