Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Richard J Malcolmson and Jonathan K Embleton,Dry powder formulations for pulmonary delivery,Pharmaceutical Science & Technology Today,1461-5347,Elsevier BV,1998-12,1,9,394-398,https://cir.nii.ac.jp/crid/1364233271257422080,https://doi.org/10.1016/s1461-5347(98)00099-6