M.  Singh and Argade, N. P., ?Efficient convergent access to spiroketal segment of (+)-spiroxaline methyl ether?, Synthesis-Stuttgart, vol. 2, no. 1, pp. 1137-1141, 2011.

P. S.  Deore, Haval, K. P., Gadre, S. R., and Argade, N. P., ?Concise account of the chemistry of valuable alkyl(methyl)maleic anhydrides?, Synthesis-Stuttgart, vol. 46, no. 20, pp. 2683-2700, 2014.