@article{TUW-199487, author = {Steinb{\"o}ck, Andreas and Graichen, Knut and Kugi, Andreas}, title = {Dynamic Optimization of a Slab Reheating Furnace With Consistent Approximation of Control Variables}, journal = {IEEE Transactions on Control Systems Technology}, year = {2011}, volume = {19}, number = {6}, pages = {1444--1456}, doi = {10.1109/TCST.2010.2087379} }