Letters in Mathematical Physics
Letters in Mathematical Physics > 2015 > 105 > 6 > 779-794
Letters in Mathematical Physics > 2015 > 105 > 6 > 795-825
Letters in Mathematical Physics > 2015 > 105 > 6 > 853-891
Letters in Mathematical Physics > 2015 > 105 > 6 > 769-778
Letters in Mathematical Physics > 2015 > 105 > 6 > 827-852