Only a mathematician with Grönwall's gift for analysis and most uncommon grasp of the literature of chemistry and physics could have contributed the elegant solution which he gave.
Lamang ng isang dalub-agbilang sa Grönwall's gift para sa pagtatasa at pinaka-hindi mahigpit na hawakan ng literatura ng kimika at pisika ay may ambag ang makisig solusyon na ibinigay niya.