Browne 1989c, p. 70; Browne 1992b, pp. 32–33; Browne 1992c, p. 381; Browne 1995a, p. 457; Browne 1998c, pp. 14–16; Browne 2000a, p. 33; Browne 1994b, pp. 18–19, 28–32, 43–45; Brakmann 2006, p. 295; Ochała 2013, pp. 195–196 n. 195; Łajtar 2014a, pp. 392–393; Ruffini 2014b, p. 225; Ochała 2015, p. 13 n. 51; Łajtar 2015–2016, p. 135 (no. 94); Łajtar 2020b, Appendix no. QI56 (cf. p. 187)