@article{10_4064_sm_36_3_223_226,
     author = {Neil Rickert},
     title = {A note on positive definite functions},
     journal = {Studia Mathematica},
     pages = {223--226},
     publisher = {mathdoc},
     volume = {36},
     number = {3},
     year = {1970},
     doi = {10.4064/sm-36-3-223-226},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-36-3-223-226/}
}