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    \makecell[l]{
        Dr.\@ Katherine J. Kuchenbecker \\
        Max Planck Institute for Intelligent Systems \\
        +49 711 689-3510 \\
        \url{kjk@is.mpg.de} \\
        \url{https://hi.is.mpg.de/person/kjk}
    } & {\raggedright Dr.\@ Kuchenbecker was my academic advisor at the University of Pennsylvania from 2013-2018 and now directs the Haptic Intelligence Department at MPI-IS.\par} \\
    \makecell[l]{
        Siyao (Nick) Hu \\
        University of Pennsylvania \\
        (267) 496-8983 \\
        \url{siyaohu@seas.upenn.edu}
    } & {\raggedright Nick is one of my fellow graduate students in the Haptics Lab at Penn. We collaborated on electromechanical design and publications at the beginning of the Proton Pack project.\par} \\
    \makecell[l]{
        Dr.\@ Matt Zucker \\
        Swarthmore College \\
        (610) 328-8636 \\
        \url{mzucker1@swarthmore.edu} \\
        \url{http://www.swarthmore.edu/NatSci/mzucker1}
    } & {\raggedright Dr.\@ Zucker has been a robotics professor at Swarthmore since 2010. He supervised my summer research in 2011 and co-advised my senior design project.\par}
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