Nathan Palmer, et al. “Recombinant Protein D from Haemophilus Influenzae Induces Mouse Bactericidal Antibodies Against Typeable and Non-Typeable Haemophilus Influenzae, Which Partially Protect Infant Rats Against Serotype B Bacteraemia”. Vaccination Research, vol. 5, no. 1, Feb. 2020, pp. 1-9, doi:10.17140/VROJ-5-116.