Dokl. Akad. Nauk SSSR, 1981 Volume 261, Number 1,Pages 91–94(Mi dan44841)
CRYSTALLOGRAPHY
Crystal structure of $3{,}3{,}3$-triphenyl-$3$-phosphorus-$1{,}3$-dihydro-$1$-oxoisobenzofuran,
$(\mathrm{C}_6\mathrm{H}_5)_3\mathrm{P}(\mathrm{C}_6\mathrm{H}_4)\mathrm{CO}_2\cdot2\mathrm{H}_2\mathrm{O}$