Cutrona & Russell, 1990
Concrete instrumental assistance, in which a person in a stressful situation is given the necessary resources (e.g., financial assistance, physical help with tasks) to cope with the stressful event.
Cutrona, Carolyn E., and Daniel W. Russell. "Type of social support and specific stress: Toward a theory of optimal matching". In B. R. Sarason, I. G. Sarason, & G. R. Pierce (Eds.), Social support: An interactional view New York: Wiley 1990:322.