Philip, Geevarghese Algorithms and Complexity, MPI for Informatics, Max Planck Society;
Link (Any fulltext)
Kim, E. J., Paul, C., & Philip, G. (2015). A Single-exponential FPT Algorithm for the K4-MINOR COVER Problem. Journal of Computer and System Sciences, 81(1), 186-207. doi:10.1016/j.jcss.2014.05.001.