Helmes, Kurt, Stockbridge, Richard, and Zhu, Chao. “Continuous Inventory Models of Diffusion Type: Long-term Average Cost Criterion” Annals of Applied Probability27. (2017): 1831--1885.
Helmes, Kurt L., Stockbridge, Richard, and Zhu, Chao. “A Measure Approach for Continuous Inventory Models: Discounted Cost Criterion” SIAM Journal on Control and Optimization53. (2015): 2100-2140.
Helmes, Kurt L., and Stockbridge, Richard. “Construction of the Value Function and Stopping Rules for Optimal Stopping of One-Dimensional Diffusions” Advances in Applied Probability42.1 (2010): 158-182.