Greg M. Fleishman Paul M. Thompson Adaptive gradient descent optimization of initial momenta for geodesic shooting in diffeomorphisms. 868-872 2017 ISBI https://doi.org/10.1109/ISBI.2017.7950654 https://www.wikidata.org/entity/Q90467722 conf/isbi/2017 db/conf/isbi/isbi2017.html#FleishmanT17