Ludwig, E. Et Al. 2012. The remaining challenges of pneumococcal disease in adults. EUROPEAN RESPIRATORY REVIEW , vol.21 , 57-65.

Ludwig, E., Bonanni, P., Rohde, G., SAYINER, A., & Torres, A., (2012). The remaining challenges of pneumococcal disease in adults. EUROPEAN RESPIRATORY REVIEW , vol.21, 57-65.

Ludwig, Endre Et Al. "The remaining challenges of pneumococcal disease in adults," EUROPEAN RESPIRATORY REVIEW , vol.21, 57-65, 2012

Ludwig, Endre Et Al. "The remaining challenges of pneumococcal disease in adults." EUROPEAN RESPIRATORY REVIEW , vol.21, pp.57-65, 2012

Ludwig, E. Et Al. (2012) . "The remaining challenges of pneumococcal disease in adults." EUROPEAN RESPIRATORY REVIEW , vol.21, pp.57-65.

@article{article, author={Endre Ludwig Et Al. }, title={The remaining challenges of pneumococcal disease in adults}, journal={EUROPEAN RESPIRATORY REVIEW}, year=2012, pages={57-65} }