Here is a link to Johanna Leppälä’s publications in Tuhat.

Here are the most relevant ones related to my current research:

Investigating incipient speciation in Arabidopsis lyrata from patterns of transmission ratio distortion, Leppälä, J., Bokma, F. & Savolainen, O. (2013) Genetics, 194 (3): 697-708.

Nuclear-cytoplasmic interactions reduce male fertility in hybrids of Arabidopsis lyrata subspecies, Leppälä, J. & Savolainen, O. (2011) Evolution, 65: 2959-2972.