Citation: Pekov, I.V.; Kolitsch, U.; Zubkova, N.V.; Pushcharovsky, D.Yu.; Tillmanns, E. (2007). Refined crystal structure of parakeldyshite and the genetic crystal chemistry of zirconium minerals with [Si2 O7] diorthogroups. Kristallografiya, 52, pp. 1100-1105.