best free burning sw

https://www.lifewire.com/best-free-burning-software-2438473

datetimepicker

https://www.npmjs.com/package/ng-pick-datetime
https://stackblitz.com/github/DanielYKPan/owl-examples/tree/date-time-picker
https://danielykpan.github.io/date-time-picker/

alphabeth with ñ and spaces regex

https://stackoverflow.com/questions/7373183/javascript-regex-to-accept-only-letters-spaces-and-%C3%B1

accepted

/^[ñA-Za-z _]*[ñA-Za-z][ñA-Za-z _]*$/

and

/^[\u00F1A-Za-z _]*[\u00F1A-Za-z][\u00F1A-Za-z _]*$/

should work.

Javascript regex supports \u0000 through \uFFFF.

positive number regex

https://www.google.com.co/search?q=positive+number+regex&rlz=1C1GCEA_enCO823CO823&oq=positive+number+regex&aqs=chrome..69i57j0l5.5415j0j7&sourceid=chrome&ie=UTF-8

ng-class varias clases

https://stackoverflow.com/questions/18871277/adding-multiple-class-using-ng-class

momentjs

https://momentjs.com/docs/

https://stackoverflow.com/questions/39844351/how-to-use-moment-timezone-in-angular2-via-systemjs

https://stackoverflow.com/questions/35166168/how-to-use-moment-js-library-in-angular-2-typescript-app

security-code

https://css-tricks.com/snippets/css/password-input-bullet-alternatives/

validation

https://www.concretepage.com/angular-2/angular-2-4-pattern-validation-example
https://angular-templates.io/tutorials/about/angular-forms-and-validations

numbers regular expresion

https://stackoverflow.com/questions/19715303/regex-that-accepts-only-numbers-0-9-and-no-characters