@article{10_4064_ap_59_1_53_64,
     author = {W. Kr\'olikowski and R. Porter},
     title = {Regular and biregular functions in the sense of {Fueter} - some problems},
     journal = {Annales Polonici Mathematici},
     pages = {53--64},
     publisher = {mathdoc},
     volume = {59},
     number = {1},
     year = {1994},
     doi = {10.4064/ap-59-1-53-64},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-59-1-53-64/}
}