Preprints:

Shadow prices and well-posedness in the problem of optimal investment and consumption with transaction costs (with  J. Choi, G. Žitković)
 Publications:

Stochastic Perron's method and verification without smoothness using viscosity comparison: obstacle problems and Dynkin games (with E. Bayraktar)
to appear in Proceedings of the American Mathematical Society

Stochastic Perron's method and verification without smoothness using viscosity comparison: the linear case  (with E. Bayraktar)
to appear in Proceedings of the American Mathematical Society

Optimal investment with high-watermark performance fee  (with K. Janeček)
SIAM Jounral on Control and Optimization, Vol. 50, No. 2 (2012), 790-819

A note on admissibility when the credit line is infinite (with S. Biagini)
Stochastics, Vol. 84, No. 2-3 (2012), 157-169
Optimal investment on finite horizon with random discrete order flow in illiquid markets  (with P. Gassiat and P. Pham)  
the International Journal of Theoretical and Applied Finance, Vol 14, No. 1 (2011), 17-40

In Which Models do Mutual Fund Theorems Hold True?  (with W. Schachermayer and E. Taflin)
Finance and Stochastics, Vol 13 (2009), 49-77
Asymptotic Analysis of Utility-Based Hedging Strategies for Small Number of Contingent Claims (with D. Kramkov)
Stochastic Processes and their Applications, Vol 117, No. 11 (2007), 1606-1620
Sensitivity Analysis of Utility-Based Prices and Risk-Tolerance Wealth Processes (with D. Kramkov)
Annals of Applied Probability, Vol. 16, No. 4 (2006), 2140-2194
A Two-Person Game for Pricing Convertible Bonds (with S.E. Shreve)
SIAM Journal on Control and Optimization Vol.  45, No. 4 (2006), 1508-1539 
On the Two-Times Differentiability of the Value Functions in the Problem of Optimal Investment in Incomplete Markets (with D. Kramkov)
Annals of Applied Probability, Vol. 16, No. 3 (2006), 1352-1384
Perpetual Convertible Bonds  (with I. Pikovsky and S.E. Shreve)
SIAM Journal on Control and Optimization, Vol 43, No.1 (2004), 58-85
Infinite Time Horizon Optimal Control of the Semilinear Heat Equation
Nonlinear Functional Analysis and Applications,  Vol. 7 No. 1 (2002), 69-83
A Riccati  Equation Approach to the Null Controllability of Linear Systems
Communications in Applied Analysis, Vol. 6, No. 2 (2002),  163-177
Feedback Null Controllability of the Semilinear Heat Equation 
Differential Integral Equations, Vol. 15 No.1 (2002),  115-128
Null Controllability of an Infinite Dimensional SDE with State-and-Control Dependent Noise  (with G. Tessitore)
Systems & Control Letters, Vol. 44 No. 5 (2001),  385-394
Slides based on unpublished work:
Asymptotic analysis of utility based prices and hedging strategies for utilities defined on the whole real line