\backcite {bogomolov}{{2}{1}{equation.1.3}}
\backcite {tischler}{{3}{1}{theorem.1.2}}
\backcite {gromov}{{3}{1}{theorem.1.3}}
\backcite {whitney}{{12}{4}{section.4}}
\backcite {gromov}{{14}{4}{theorem.4.2}}