Bott, S., KYNAST, U., BOTT, S., & ATWOOD, J. (1988). REACTION OF EARLY TRANSITION METAL COMPLEXES WITH MACROCYCLES. IV. SYNTHESIS AND STRUCTURE OF [(PPh4)]2[18-CROWN-6·(VCl4)2] AND 18-CROWN-6·VCl3·H2O. Journal of Coordination Chemistry, 17(1), pp. 53-61. doi:10.1080/00958978808078447

Bott, Simon, U. KYNAST, SG BOTT, and JL ATWOOD. "REACTION OF EARLY TRANSITION METAL COMPLEXES WITH MACROCYCLES. IV. SYNTHESIS AND STRUCTURE OF [(PPh4)]2[18-CROWN-6·(VCl4)2] AND 18-CROWN-6·VCl3·H2O." Journal of Coordination Chemistry 17, no. 1 (1988): 53-61.

Bott, Simon, U. KYNAST, SG BOTT, and JL ATWOOD. "REACTION OF EARLY TRANSITION METAL COMPLEXES WITH MACROCYCLES. IV. SYNTHESIS AND STRUCTURE OF [(PPh4)]2[18-CROWN-6·(VCl4)2] AND 18-CROWN-6·VCl3·H2O." Journal of Coordination Chemistry 17.1 (1988): 53-61.