The paper about the reproduction mode of the ant-plant Hirtella physophora has just been published in Arthropod-Plant Interactions. Here is the complete reference:

 

Malé P-JG, Leroy C, Lusignan L, Petitclerc F, Quilichini A, Orivel J (2015). The reproductive biology of the myrmecophyte, Hirtella physophora, and the limitation of negative interactions between pollinators and ants. Arthropod-Plant Interactions 9: 23-31.

 

It can be found here. I wish you good reading!