@misc{indiciaec358bcd4fe6d, title = {BIPP--how does it work?}, author = {A Nigam and M C Allwood}, year = {1990}, doi = {10.1111/j.1365-2273.1990.tb00452.x}, url = {https://pubmed.ncbi.nlm.nih.gov/2112432/}, note = {Source identifier: 2112432} }