@conference {MLSP2010_QuaternionMeasures,
	title = {Improperness Measures for Quaternion Random Vectors},
	booktitle = {IEEE International Workshop on Machine Learning for Signal Processing (MLSP 2010)},
	year = {2010},
	month = {August},
	address = {Kittil{\"a}, Finland},
	author = {V{\'\i}a, Javier and Ram{\'\i}rez, David and Santamar{\'\i}a, Ignacio and Vielva, Luis}
}
