The effects of stock type and radicle pruning on blue oak morphology and field performance. McCreary, Douglas D. 1997. McCreary, Douglas D. and J. Tecklin. Effects of tree shelters and weed control on blue oak growth and survival. USDA Forest Service Gen. Tech.
Tree shelters accelerate valley oak restoration on grazed rangelands.
McCreary, Douglas D. and J. Tecklin. Lifting and storing bareroot blue oak seedlings. McCreary, Douglas D. and Jerry Teckin. Effects of tree shelters on field performance of oaks in California. USDA Forest Service North Central Forest Experiment Station.