Andrzejczuk, Sylwia, et al. “Phenotypic Diversity of Haemophilus Influenzae and Haemophilus Parainfluenzae Isolates Depending on Origin and Health Condition”. Current Issues in Pharmacy and Medical Sciences, vol. 30, no. 2, Oct. 2017, pp. 90-99, https://doi.org/10.1515/cipms-2017-0018.