Solutions to singular linear ordinary differential equations with analytic coefficients are found in the form of Laplace type integrals.
@article{bwmeta1.element.bwnjournal-article-apmv74z1p201bwm, author = {\L ysik, Grzegorz}, title = {On 1-regular ordinary differential operators}, journal = {Annales Polonici Mathematici}, volume = {75}, year = {2000}, pages = {201-214}, zbl = {0959.34005}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-apmv74z1p201bwm} }
Łysik, Grzegorz. On 1-regular ordinary differential operators. Annales Polonici Mathematici, Tome 75 (2000) pp. 201-214. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-apmv74z1p201bwm/
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