1. Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
2. Department of Mathematics, Friedrich-Alexander-Universität Erlangen-Nürnberg 91054, Erlangen, Germany
3. Department of Computational and Applied Mathematics, Rice University, Houston, Texas 77005, United States
4. Shell International Exploration and Production Inc., Houston, Texas 77082, United States